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This PCB contains the digital circuitry (and some of the analogue stuff) in the unit. The 40 pin IC in the middle of the board is an 8035 microcotroller, the firmware is in the EPROM at the bottom right corner.
Above the 8035 is the SAA5020 timing chain IC, to the left of the 8035 are 3 smaller ICs which are the video RAM and the data bus buffer.. Above those is an SAA5050 character generator while in the bottom left corner are a number of TTL parts mostly to handle the video RAM addressing. This is a pretty standard application circuit for these ICs.
To the left of the video RAM is the TEA1002 PAL encoder with its associated analogue components, above that the metal box is (of course) an RF modulator. It's not a standard one, though.
To the right, the other 40 pin IC is an SAA5070 Modem chip with the associated LM339 to the right. Also there is an ER1400 EAROM to store the telephone numners.
The rear right corner contains the SAB3012 interface for the keypad and the cassette interface circuits.
October 5, 2010
Found this in my an old computer in my basement and thought I would shoot it for today's photo. I would guess it has been down there for 5 or 6 years, maybe a little longer.
Check out a couple more from this shoot on my blog:
I have one of those USB-based logic analyzers that needs Windows software to make it go. I had been doing Windows-in-a-window with VMWare, but it's kind of a pain. If I were to use a real Windows laptop, I'd need a shelf or something for it. I wanted it above my oscilloscope, which meant a laptop stand that was taller and wider than most. Time for the laser cutter!
This is made from 1/4" (0.20" really) cheapie plywood. I think I paid $10 for a 4'x8' sheet of it.
todbot.com/blog/2009/06/16/laser-cut-laptop-stand-and-osc...
Connecting the logic analyzer again to test the radio communication stability. I'm trying to use SPI as fast as possible but going just a bit too fast sometimes gives strange results.
The Postcard
A postally unused carte postale that was published by Neurdein et Cie of Paris. The card has a divided back.
Abba Eban
"History teaches us that men and
nations behave wisely when they
have exhausted all other alternatives".
This was said during a speech in London UK on 16th. December 1970 by Abba Eban (1915-2002), an Israeli diplomat and writer.
Visé Paris No. 584
The reference to 'Visé Paris' followed by a unique reference number means that the image has been inspected by the military authorities in the French capital and deemed not to be a security risk.
'Visé Paris' signifies that the card was published during or soon after the end of the Great War.
Verdun
Verdun (Official name before 1970 Verdun-sur-Meuse) is a city in the Meuse département in Grand Est, northeastern France.
The Battle of Verdun in The Great War
In the Franco-Prussian War, Verdun was the last French fortress to surrender in 1870. Shortly afterwards, a new system of fortification was begun. This consisted of a mutually supporting ring of 22 polygonal forts up to 8 kilometres (5.0 mi) from the city, and an inner ring of 6 forts.
Verdun was the site of a major battle, the longest-lasting of the Great War. It was one of the costliest battles in military history, and exemplified the policy of a "war of attrition" pursued by both sides, which led to an enormous loss of life and very large casualty lists.
Following the failure of the Schlieffen Plan in 1914 and the solidifying of the Western Front, Germany remained on the strategic defensive in the west throughout most of 1915.
In the winter of 1915–16, German General Erich von Falkenhayn, the chief of the German General Staff (1914–1916) made plans for a large offensive on the Western Front that ultimately aimed to break the French Army through the application of firepower at a point that the French had to hold for reasons of national prestige.
As Falkenhayn recalled it, his so-called "Christmas memorandum" to Kaiser Willhelm II envisioned:
"A massive but limited attack on a French
position for the retention of which the French
Command would be compelled to throw in
every man they have."
Once the French army had bled to death, Great Britain could be brought down by Germany's submarine blockade and superior military strength. The logic of initiating a battle not to gain territory or a strategic position but simply to create a self-sustaining killing ground - to bleed the French army to death -pointed to the grimness of military vision in 1916.
Recent scholarship by Holger Afflerbach and others, however, has questioned the veracity of the Christmas memo. No copy has ever surfaced, and the only account of it appeared in Falkenhayn's post-war memoir.
It is possible that Falkenhayn did not specifically design the battle to bleed the French army, but used this supposed motive after the fact in an attempt to justify the Verdun offensive, despite its failure.
Verdun was the strongest point in pre-war France, ringed by a string of powerful forts, including Douaumont and Fort Vaux. By 1916, the salient at Verdun jutted into the German lines and lay vulnerable to attack from three sides.
The historic city of Verdun had been an oppidum of the Gauls before Roman times and later a key asset in wars against Prussia, and Falkenhayn suspected that the French would throw as many men as necessary into its defence.
Ironically, France had substantially weakened Verdun's defences after the outbreak of the war, an oversight that would contribute to the removal of Joseph Joffre from supreme command at the end of 1916.
The German attack was slated to begin on the 12th. February, then the 16th. February 1916, but the snow forced repeated postponements.
Falkenhayn massed artillery to the north and east of Verdun to precede the infantry advance with intensive artillery bombardment. His attack was to hit the French positions on the right bank of the Meuse.
Although French intelligence had warned of his plans, these warnings were ignored by the French Command, and troop levels in the area remained low. Consequently, Verdun was utterly unprepared for the initial bombardment on the morning of the 21st. February 1916.
German infantry attacks followed that afternoon, and met tenacious but ultimately inadequate resistance for the first four days.
On the 25th. February 1916, the Germans occupied Fort Douaumont. French reinforcements - now under the leadership of General Philippe Pétain - began to arrive and were instantly thrown into "the furnace" (as the battle was called) to slow the German advance, no matter what the cost.
Over the next several days, the stubborn defence managed to slow the German advance with a series of bloody counter-attacks. In March, Falkenhayn decided to target the French positions on the left bank of the Meuse as well, broadening the offensive front twofold.
Throughout March and April, Cumières-le-Mort-Homme and Hill 304 were under continuous heavy bombardment and relentless infantry attacks.
Meanwhile, Pétain organised repeated, small-scale counter-attacks to slow the German advance. He also ensured that the sole supply road from Bar-le-Duc into Verdun remained open. It became known as the Voie Sacrée "Sacred Way" because it continued to carry vital supplies and reinforcements into the Verdun front despite constant artillery fire.
German gains continued in June 1916, but slowly, and only after increasingly heavy losses on their side. On the 7th. June, following almost a week of bitter resistance, Fort Vaux fell to the Germans after a murderous hand-to-hand fight inside the fort itself.
On the 23rd. June, the Germans reached what would become the furthest point of their advance. The line was just in front of Fort Souville, the last stronghold before Verdun itself.
Pétain was making plans to evacuate the right bank of the Meuse when the combined Anglo-French offensive on the Somme River was launched on the 1st. July, partly to relieve pressure on the French, although the first day was the bloodiest in the British Army's history.
The Germans could no longer afford to continue their offensive at Verdun when they were needed so desperately on the Somme. At a cost of some 400,000 German casualties and a similar number of French, the attack was finally called off. Germany's intention to bleed France to death had failed.
The battle continued, however, from October to the end of the year. French offensives, employing new tactics devised by General Robert Nivelle, regained the forts and territory they had lost earlier. This was the only gleam of hope in an otherwise abysmal landscape.
Overall, the battle lasted 11 months. Falkenhayn was replaced by Paul von Hindenburg as Chief of General Staff. General Nivelle was promoted over the head of General Pétain to replace Generalissimo Joseph Joffre as French supreme commander, although he was to hold the post for less than six months.
Cemetery and Memorials
There are many French and German cemeteries throughout the battlefield. The largest is the French National Cemetery and Douaumont Ossuary near Fort Douaumont. Thirteen thousand crosses adorn the field in front of the ossuary, which holds roughly 130,000 unidentified remains brought in from the battlefield. Every year yields more remains, which are often placed inside the ossuary's vaults.
Among many revered memorials on the battlefield is the "Bayonet Trench", which marks the location where some dozen bayonets lined up in a row were discovered projecting out of the ground after the war; below each rifle was the body of a French soldier. It has been assumed that these belonged to a group of soldiers who had rested their rifles against the parapet of the trench they were occupying when they were killed during a bombardment, and the men were buried where they lay in the trench and the rifles left untouched. However, this is probably not historically accurate: experts agree that the bayonets were probably affixed to the rifles after the attack and installed by survivors to memorialise the spot.
Nearby, the World War I Meuse-Argonne American Cemetery and Memorial is located at Romagne-sous-Montfaucon to the northwest of Verdun. It is the final resting place for 14,246 American military dead, most of whom died in the Meuse-Argonne Offensive. The chapel contains a memorial to the 954 American missing whose remains were never recovered or identified.
On the 12th. September 1916 King George V awarded the Military Cross to the City of Verdun, one of only two awards of this British decoration to a municipality during World War I, the other being Ypres.
The Use of Artillery in the Great War
Artillery was very heavily used by both sides during the Great War. The British fired over 170 million artillery rounds of all types, weighing more than 5 million tons - that's an average of around 70 pounds (32 kilos) per shell.
If the 170m rounds were on average two feet long, and if they were laid end to end, they would stretch for 64,394 miles (103,632 kilometres); the line would go round the equator over two and a half times. If the artillery of the Central Powers of Germany and its allies is factored in, the figure can be doubled to 5 encirclements of the planet.
During the first two weeks of the Third Battle of Ypres, over 4 million rounds were fired at a cost of over £22,000,000 - a huge sum of money, especially over a century ago.
Artillery was the killer and maimer of the war of attrition.
According to Dennis Winter's book 'Death's Men' three quarters of battle casualties were caused by artillery rounds. According to John Keegan ('The Face of Battle') casualties were:
- Bayonets - less than 1%
- Bullets - 30%
- Artillery and Bombs - 70%
Keegan suggests however that the ratio changed during advances, when massed men walking line-abreast with little protection across no-man's land were no match for for rifles and fortified machine gun emplacements.
Many artillery shells fired during the Great War failed to explode. Drake Goodman provides the following information on Flickr:
"During World War I, an estimated one tonne
of explosives was fired for every square metre
of territory on the Western front.
As many as one in every three shells fired did
not detonate.
In the Ypres Salient alone, an estimated 300
million projectiles that the British and the
German forces fired at each other were "duds",
and most of them have not been recovered."
To this day, large quantities of Great War matériel are discovered on a regular basis. Many shells from the Great War were left buried in the mud, and often come to the surface during ploughing and land development.
For example, on the Somme battlefields in 2009 there were 1,025 interventions, unearthing over 6,000 pieces of ammunition weighing 44 tons.
Artillery shells may or may not still be live with explosive or gas, so the bomb disposal squad, of the Civilian Security of the Somme, dispose of them.
A huge mine under the German lines did not explode during the battle of Messines in 1917. The mine, containing several tons of ammonal and gun cotton, was triggered by lightning in 1955, creating an enormous crater.
The precise location of a second mine which also did not explode is unknown. Searches for it are not planned, as they would be too expensive and dangerous. For more on this, please search for "Cotehele Chapel"
The Somme Times
From 'The Somme Times', Monday, 31 July, 1916:
'There was a young girl of the Somme,
Who sat on a number five bomb,
She thought 'twas a dud 'un,
But it went off sudden -
Her exit she made with aplomb!'
Here is a good example of how not to livery a vehicle.
Its a messy, fussy design with a poor choice of fonts. The amber lightbar and checker side stickers suggest a different trade from the "Electrical Contractors to Commerce and Industry".
In fact its probably a poor choice of van also, having had experience of one a while ago - but it did sell well to fleet buyers, such as the Post Office, Police, etc (I suspect they were cheap).
Would you trust someone with your electrical installation needs to someone who drops the 'e' from electrics?
The neighbouring van appears to have bullet hole stickers on the rear door.
The case has holes for you to run your wires behind everything, resulting in a much cleaner working area. The only thing missing here -- to completely be running windows -- is a video card. And many motherboards have video built-in. So you could end up with something looking this clean -- and 0 harddrives, due to the 240G M.2 SSD sitting right there on the motherboard.
My Motherboard is one of the VERY few motherboards on the market that has all the features I want, like on-board 7.1 sound with optical digital out: ASRock X99 Extended-length ATX Motherboard with LGA2011-3 CPU socket: $280.48 (after $40 rebate) from NewEgg. Other misc specs: Chipset: Intel X99 / Memory: 8x288pin, DDR4 3200+(OC), MAX:128G, channel supported: Quad Channel / 5xPCI Express 3.0 x16 Slots / 1xPCI Express 2.0 x16 slot / SATA 6Gb/s: 10xSATA 6Gb/s / M.2: 1xUltra M.2 Socket / Onboard Audio: Realtek ALC1150 7.1 Channels / Onboard LAN: LAN Chipset Intel I217LM, Second LAN Chipset Intel I210AT (both 1Gbps,with teaming functionality) / Rear Panel Ports: 1xPS/2 keyboard/mouse port, 2xCOM Port Headers, 2xRJ-45 LAN Ports / USB 3.0: 4xUSB 3.0,4xUSB 2.0 / eSATA: 1 / S/PDIF Out: 1xOptical / 2xCPU Fan Connectors (1x4-pin, 1x3-pin), 3xChassis Fan Connectors (1x4-pin, 2x3-pin) (Smart Fan Speed Control), 1xPower Fan Connector (3-pin), 1xHDD Saver Connector / Dimensions: 12x10.5" / XXL Aluminum Alloy Heatsink, Premium 60A Power ±Choke±, Premium Memory Alloy ±Choke±, Ultra Dual-N MOSFET (UDM), Nichicon 12K Platinum Caps, Sapphire Black PCB / Supports Intel Core i7 and Xeon E5-1600/2600 v3 Processor Family for the LGA 2011-3 Socket, up to 18 Cores / Supports AMD 4-Way CrossFireX and NVIDIA 4-Way SLI / 10 SATA3, 1 eSATA, 1 Ultra M.2 (PCIe Gen3 x4 & SATA3) / 6 USB 3.0 (2 Front, 4 Rear) / 8 USB 2.0 (4 Front, 4 Back) / 2 COM Port Headers / 1 Thunderbolt AIC Connector / Limited Warranty period (parts/labor): 3 years / Dimensions: 332x352x87mm.
My modular power supply is the most badass one I've ever owned, with the highest wattage: An Enermax ERV1000EWT-G 1000W v2.3 $140.98 (after $45 rebate) from NewEgg. Other specs: Type: ATX12V v2.3 / EPS12V v2.92, v2.8 / 24Pin +12V Rails: 4 / PCI-Express Connector: 6x6+2-Pin / SATA Power Connectors: 10 / SLI Certified / Haswell Support Certified / CrossFire Ready / 87-93% efficiency @ 20-100% load / 80 PLUS GOLD Certified / Over Voltage Protection / Input Current: 11 - 5A / Output: +3.3V@24A, +5V@24A, +12V1@30A, +12V2@30A, +12V3@30A, +12V4@30A, -12V@0.5A, +5VSB@3A / MTBF: over 100,000 Hours / Dimensions: 5.91" x 3.39" x 6.89" / Weight: 6.39 lbs. / Dynamic Hybrid Transformer Topology: Technological breakthrough topology using a staged dynamic transformer array for extremely high efficiency with the most durable and stable output at any load. / C6 & Hybrid ready!: Maximum compatibilitywith C6 & hybrid states of current and future CPU & GPU generations by ZERO LOAD design (no minimum load). / Twister fan inside: 13.9cm Twister-bearing fan with low noise and long lifetime. / 100% Japanese electrolytic capacitors: Highest components standards for maximum durability and stability. / Future ready: 12P modular design for possibly upcoming new CPU and GPU 10P and/or 12P connectors. / DXXI ready: 100% 6+2P (8P) PCI-E connector to support new generation DXXI graphic cards. / 24/7 @ 50degrees C ready: Non-Stop industrial class performance at 50degrees C ambient. / SpeedGuard: Advanced fuzzy logic fan speed control for optimal cooling and minimum noise. / HeatGuard: Keeping PSU fan running for 30-60 seconds after shutdown to dissipate the remaining system heat and prolonging system lifetime. / CordGuard: Fixing the AC cord tightly to avoid accidental shutdowns of your PC. / Warranty period: 5 years
building computer.
ASRock X99 WS motherboard, Enermax Revolution87+ power supply.
Thailog.
upstairs, Clint and Carolyn's house, Alexandria, Virginia.
March 17, 2015.
... Read my blog at ClintJCL at wordpress.com
... Read Carolyn's blog at CarolynCASL at wordpress.com
BACKSTORY: Building my new computer! We decided to name it Thailog. Thailog ("Goliath" spelled backwards) is the evil twin of Goliath from the cartoon Gargoyles. Carolyn's computer is named after Goliath, so it just makes sense that Clint's computer is the evil twin of Carolyn's± computer. A quick summary of the computer's specs is: Intel Core i7-5820K Haswell-E 6-Core 3.3GHz with an Arctic Freezer I30 cooler on a ASRock X99 WS EATX motherboard with 24G of Crucial Ballistix Sport DDR4 2400mHz RAM, a Radeon R9 270 video card, and a Crucial M500 240GB M.2 SSD...all inside a massive NZXT Phantom 820 case. It was a $1560 build, summarized on my blog at clintjcl.wordpress.com/2015/03/06/journal-hardware-purcha...
Ever since I bought my first generation Flip HD Mino, I felt in love with this wonderful device.
Yesterday Cisco - the owner of Pure Digital - has announced that it would ditch the popular Flip video. What a big waste!
The so-called reason is that HD camera capabilities of current mobile and smart phones have made the tiny Flip video device redundant. At least that's what the "analysts" say. Of course this is not the real reason. Analysts are right to state that moving into the highly competitive consumer business was a bad idea for a company like Cisco whose core business is networking. So yesterday the logic and dictate of the stock exchange killed a remarkable industrial product that - even with the rise of the smart phone - still had a bright future ahead.
Single purpose vs. multi purpose
What makes the Flip remarkable is its single purpose. It has only one purpose: shoot! Basically it has only one big red button. The big easy…
The world of smart phones is the world of Swiss Army knives. You name a function and there's a tool (App) for that! That's cool. Yeah, I do love my iPhone too…
But when I need to cut my sandwich, what knife is the best? A random kitchen knife or a Swiss Army knife?
Does everything need to be multi-purpose? That is the question. Does every digital piece of hardware need to merge into a mobile phone? From usability pov a single purpose device is a lot easier to understand use and manage. For this reason I think the Flip has the right to exist.
What is the better video camera? The Flip Mino HD or the iPhone4? The reality is that the Flip outsmarts the iPhone on both video quality and usability. The Flip lacks mobile sharing capabilities that's right but most of the time video requires editing which is done best on a computer with a wide screen!
What also appeals to most Flip users is its ruggedness. It's almost unbreakable. Would you tape your iPhone4 on your mountain bike to capture the feeling you have on your wildest rides? I would not. There's a Flip for that!
I am curious if this really will be the end of Flip video? I wonder what the millions of Flip users are going to do. I know one thing… when production really stops I will keep my eye on the stocks and buy a couple of these wonderful single purpose - no it's no insult, it's a quality - devices.
© 2011 Kristof Van Brussel
FÁVARO, Sílvio; KMETEUK FILHO, Osmir. Noções de lógica e matemática básica. Rio de Janeiro: Ciência Moderna, 2005.
Class.: 511.3
Cutter: F996n
Quantidade de exemplares: 7
Installation by Elizabeth Hudson
Intermedia Gallery
Centre for Contemporary Arts
Sauchiehall Street
Glasgow, Scotland
iPhone6
Apple's attention to detail even goes as far as the design for their pro software dongles — in this case for the Logic Pro audio/MIDI sequencer.
The one on the left is the original Emagic dongle: transparent blue and with a few curves thrown in. The one on the right is the new Apple design: plain white and ultra-simplistic.
As a side note: Emagic was a very design-conscious company, too. so Apple's acquisition of the iconic German audio/MIDI software maker makes sense beyond getting access to Emagic's core software engineering know-how.