View allAll Photos Tagged retrocomputing
The Cambridge Computer Z88 is an A4-size, lightweight, portable Z80-based computer with a built-in combined word processing/spreadsheet/database application called PipeDream, along with several other applications and utilities, such as a Z80-version of the BBC BASIC programming language.
en.wikipedia.org/wiki/Cambridge_Z88
Retrocomputing (a portmanteau of retro and computing) is the use of early computer hardware and software today. Retrocomputing is usually classed as a hobby and recreation rather than a practical application of technology; enthusiasts often collect rare and valuable hardware and software for sentimental reasons. However some do make use of it.[1] Retrocomputing often gets its start when a computer user realizes that expensive fantasy systems like IBM Mainframes, DEC Superminis, SGI workstations and Cray Supercomputers have become affordable on the used computer market, usually in a relatively short time after the computers' era of use.
en.wikipedia.org/wiki/Retrocomputing
Con il termine retrocomputing si indica una attività di "archeologia informatica" che consiste nel reperire, specialmente a costi minimi, computer di vecchie generazioni, che hanno rappresentato fasi importanti dell'evoluzione tecnologica, ripararli se sono danneggiati, metterli nuovamente in funzione e preservarli.
TFK CQX 87 KG
CQX87K
Vishay Telefunken
Seven-Segment Numeric LED Display - Com Ka
Package Style (Basic)=DIP
Number of Characters=2
Color=Red
Character Height (mm)=13
Peak Wavelength (m)=660n
Iv Min.(cd) Luminous Intensity=300u
@I(F) (A) (Test Condition)=20m
V(F) Max.(V) Forward Voltage=2.0
@I(F) (A) (Test Condition)=20m
I(F) Max. (A) Forward Current=25m
Status=Discontinued
Package=DIP
This board:
1) Second 64K (8kx8) SRAM: CDM6264E3 (datacode 1982)
2) Serial RS232 Interface with 8251 USART
3) Memory mapped 8 bit parallel IN/OUT with LS374 latched outputs and LS244 inputs with one interrupt line
4) Memory mapped co-processor C8231A: 16 bit floating point arithmetic unit running @ 2.5 Mhz
This program (written in Visual Basic) let my Z80 NANO COMPUTER communicate with an IBM PC Computer. You can choose either a serial or a parallel transmission for both the directions.
This 60 sec. video demo will show both Serial and Parallel transmission (TX and RX respectively)
In the demo the software will import the Assembly code from a third-party PC Z80 Simulator and then transmit it from the PC to the Z80 NANO COMPUTER ram. This trasmission in this demo is serial (RS-232). A 16 bit checksum is calculated on both the machines, transmitted to the Z80 machine and there checked. Serial transmission allows also a parity checking control. Then the program will re-import data from the Z80 to the PC, via parallel transmission this time. I have choosed a slow 10 ms handshaking to let you see the data while imported. A 16 bit checksum is calculated on both the machines, transmitted from the Z80 to the PC and here checked.
Hexadecimal data are manually copied from the program and pasted in a notepad to show you that data have been sent and received in a correct way.
The HP Integral PC (or HP 9807A) was a portable UNIX workstation computer system produced by Hewlett-Packard, launched in 1985. It was based on the Motorola 68000 microprocessor (running at 8 MHz) and ran early version of the HP-UX operating system.
en.wikipedia.org/wiki/HP_Integral_PC
Retrocomputing (a portmanteau of retro and computing) is the use of early computer hardware and software today. Retrocomputing is usually classed as a hobby and recreation rather than a practical application of technology; enthusiasts often collect rare and valuable hardware and software for sentimental reasons. However some do make use of it.[1] Retrocomputing often gets its start when a computer user realizes that expensive fantasy systems like IBM Mainframes, DEC Superminis, SGI workstations and Cray Supercomputers have become affordable on the used computer market, usually in a relatively short time after the computers' era of use.
en.wikipedia.org/wiki/Retrocomputing
Con il termine retrocomputing si indica una attività di "archeologia informatica" che consiste nel reperire, specialmente a costi minimi, computer di vecchie generazioni, che hanno rappresentato fasi importanti dell'evoluzione tecnologica, ripararli se sono danneggiati, metterli nuovamente in funzione e preservarli.
It looks like a TRS-80 Color Computer, and it mostly is: sadly, its compatibility was only partial for copyright reasons.
The Apple IIc, the fourth model in the Apple II series of personal computers, was Apple Computer’s first endeavor to produce a portable computer. The end result was a luggable 7.5 lb (3.4 kg) notebook-sized version of the Apple II that could easily be transported from place to place.
en.wikipedia.org/wiki/Apple_IIc
Retrocomputing (a portmanteau of retro and computing) is the use of early computer hardware and software today. Retrocomputing is usually classed as a hobby and recreation rather than a practical application of technology; enthusiasts often collect rare and valuable hardware and software for sentimental reasons. However some do make use of it.[1] Retrocomputing often gets its start when a computer user realizes that expensive fantasy systems like IBM Mainframes, DEC Superminis, SGI workstations and Cray Supercomputers have become affordable on the used computer market, usually in a relatively short time after the computers' era of use.
en.wikipedia.org/wiki/Retrocomputing
Con il termine retrocomputing si indica una attività di "archeologia informatica" che consiste nel reperire, specialmente a costi minimi, computer di vecchie generazioni, che hanno rappresentato fasi importanti dell'evoluzione tecnologica, ripararli se sono danneggiati, metterli nuovamente in funzione e preservarli.
The Indy, code-named "Guinness", is a low-end workstation introduced on 12 July 1993. Developed and manufactured by Silicon Graphics Incorporated (SGI), it was the result of their attempt to obtain a share of the low-end computer-aided design (CAD) market, which was dominated at the time by other workstation vendors; and the desktop publishing and multimedia markets, which were mostly dominated at the time by Apple Computer. It was discontinued on 30 June 1997 and support ended on 31 December 2011.
en.wikipedia.org/wiki/SGI_Indy
Retrocomputing (a portmanteau of retro and computing) is the use of early computer hardware and software today. Retrocomputing is usually classed as a hobby and recreation rather than a practical application of technology; enthusiasts often collect rare and valuable hardware and software for sentimental reasons. However some do make use of it.[1] Retrocomputing often gets its start when a computer user realizes that expensive fantasy systems like IBM Mainframes, DEC Superminis, SGI workstations and Cray Supercomputers have become affordable on the used computer market, usually in a relatively short time after the computers' era of use.
en.wikipedia.org/wiki/Retrocomputing
Con il termine retrocomputing si indica una attività di "archeologia informatica" che consiste nel reperire, specialmente a costi minimi, computer di vecchie generazioni, che hanno rappresentato fasi importanti dell'evoluzione tecnologica, ripararli se sono danneggiati, metterli nuovamente in funzione e preservarli.
The seven trimmers (all connected to a 555 oscillating circuit) are tuned to play the seven musical notes (Major Scale). The two quad analog/bilateral switch 4016 select the appropriate resistor, according to a seven bits word. The last bit is used to activate or mute the sound. The amplifier is just a simple general purpose low-power amplifying transistor (2N2222A).
â—¦ Co-processor manufacturer: AMD (AM9511) or Rochester Electronics replacement, licensed by Intel (c) 1980 (C8231A).
Rochester Electronics is licensed and authorized by semiconductor manufacturers to provide a continuing manufacturing source for mature/discontinued products.
AM9511 APU performs floating point calculations that would be too time-consuming or cumbersome if done on Z80. In addition to the four basic operations, the 9511 can implement transcendental functions (sin, log, etc.), and it can also perform conversion from floating point to fixed point and vice versa. It can also perform operations in 16 or 32 bit fixed point two's complement integer representation.
A portable DVD player with a video input jack provided a handy test screen for ELF2K's vintage PIXIE (RCA1861) graphics chip output.
The MessagePad was the first series of personal digital assistant devices developed by Apple Computer (now Apple Inc.) for the Newton platform in 1993. Some electronic engineering and the manufacture of Apple's MessagePad devices was done in Japan by the Sharp Corporation. The devices were based on the ARM 610 RISC processor and all featured handwriting recognition software and were developed and marketed by Apple. The devices ran the Newton OS.
en.wikipedia.org/wiki/MessagePad
Retrocomputing (a portmanteau of retro and computing) is the use of early computer hardware and software today. Retrocomputing is usually classed as a hobby and recreation rather than a practical application of technology; enthusiasts often collect rare and valuable hardware and software for sentimental reasons. However some do make use of it.[1] Retrocomputing often gets its start when a computer user realizes that expensive fantasy systems like IBM Mainframes, DEC Superminis, SGI workstations and Cray Supercomputers have become affordable on the used computer market, usually in a relatively short time after the computers' era of use.
en.wikipedia.org/wiki/Retrocomputing
Con il termine retrocomputing si indica una attività di "archeologia informatica" che consiste nel reperire, specialmente a costi minimi, computer di vecchie generazioni, che hanno rappresentato fasi importanti dell'evoluzione tecnologica, ripararli se sono danneggiati, metterli nuovamente in funzione e preservarli.
Running an 1802 machine code routine using EF1 sync (not interrupts) to display 36 characters from a message buffer.
I purchased this second hand when I started collecting and had it sent down from Queensland. The Ohio Scientific computers were interesting: I gather that this and the 8P were intended for home automation, hence the huge number of ports at the back. I was told that it was horrible to work on in winter, as the fan pushed cold air up through the keyboard.
Identification plate on Burroughs TD700 Self-Scan early gas plasma display screen with main control unit and keyboard. Design Level (DL) 4 c1973.
Although the control unit identity plate is stamped for 240 volts, the power supply test points for 5.1v, 12v, -12v, 30v, and -250v were all up to required values on 110 volts AC supply from the variac..!
The thermal-bound version of the Oric-1 manual. This was written by John Scriven and published by Sunshine Publications. A copy was included with every Oric-1 package.
The IBM 5155, an otherwise pretty much standard IBM PC in a luggable case, if you're a weight lifter. Came with an amber (monochrome) screen built-in.
The Indy, code-named "Guinness", is a low-end workstation introduced on 12 July 1993. Developed and manufactured by Silicon Graphics Incorporated (SGI), it was the result of their attempt to obtain a share of the low-end computer-aided design (CAD) market, which was dominated at the time by other workstation vendors; and the desktop publishing and multimedia markets, which were mostly dominated at the time by Apple Computer. It was discontinued on 30 June 1997 and support ended on 31 December 2011.
en.wikipedia.org/wiki/SGI_Indy
Retrocomputing (a portmanteau of retro and computing) is the use of early computer hardware and software today. Retrocomputing is usually classed as a hobby and recreation rather than a practical application of technology; enthusiasts often collect rare and valuable hardware and software for sentimental reasons. However some do make use of it.[1] Retrocomputing often gets its start when a computer user realizes that expensive fantasy systems like IBM Mainframes, DEC Superminis, SGI workstations and Cray Supercomputers have become affordable on the used computer market, usually in a relatively short time after the computers' era of use.
en.wikipedia.org/wiki/Retrocomputing
Con il termine retrocomputing si indica una attività di "archeologia informatica" che consiste nel reperire, specialmente a costi minimi, computer di vecchie generazioni, che hanno rappresentato fasi importanti dell'evoluzione tecnologica, ripararli se sono danneggiati, metterli nuovamente in funzione e preservarli.
The Cambridge Computer Z88 is an A4-size, lightweight, portable Z80-based computer with a built-in combined word processing/spreadsheet/database application called PipeDream, along with several other applications and utilities, such as a Z80-version of the BBC BASIC programming language.
en.wikipedia.org/wiki/Cambridge_Z88
Retrocomputing (a portmanteau of retro and computing) is the use of early computer hardware and software today. Retrocomputing is usually classed as a hobby and recreation rather than a practical application of technology; enthusiasts often collect rare and valuable hardware and software for sentimental reasons. However some do make use of it.[1] Retrocomputing often gets its start when a computer user realizes that expensive fantasy systems like IBM Mainframes, DEC Superminis, SGI workstations and Cray Supercomputers have become affordable on the used computer market, usually in a relatively short time after the computers' era of use.
en.wikipedia.org/wiki/Retrocomputing
Con il termine retrocomputing si indica una attività di "archeologia informatica" che consiste nel reperire, specialmente a costi minimi, computer di vecchie generazioni, che hanno rappresentato fasi importanti dell'evoluzione tecnologica, ripararli se sono danneggiati, metterli nuovamente in funzione e preservarli.