Some of our latest additions are shown below - clicking on the link will take you to the items main page and will also show any further photographs.
- Intel i486DX2 @ 66 MHz (upgrade)
- Intel i486DX @ 33MHz (original)
- integrated into CPU
- 8K internally in CPU, optional 256K L2 Cache Module
- 48 Mbytes (options range from 8M to 64M)
- 8 MCA slots (32 bit)
- Interfaces (onboard)
- Mouse, Keyboard
- 1 x Serial
- 1 x Parallel
- Floppy (1.44M), allows attachment of up to 3 drives
The 8595 is an early model 95, lacking the protective plastic flap that covers the power button in later models. The model 95 uses the same case as the model 85, but with redesigned internals. It is the largest Microchannel machine built by IBM that did not include non-Microchannel expansion slots.
This 3.5" exteranl floppy disk drive by Watford Electronics is designed to connect to a BBC Microcomputer DFS or ADFS. Under DFS it presents itself as disks 0/2. It run in 80-track mode.
This Cumana 5.25" floppy disk drive is powered by the BBC Micro and presents itself as disks 0/2. Switchable between 40 amnd 80 track modes.
The TRS-80 Expansion Interface (catalog number 26-1140) is the basic model, shipping with no additional RAM installed. Two other variants were also sold with catalog numbers 26-1141 and 26-1142, containing 16K and 32K or RAM respectively.
In addition to allowing extra RAM to be fitted to a TRS-80, the Expansion Interface also provides:
- DIN jacks for two cassette records
- Line printer card-edge for connection to Radio Shack Line Printers and other suitable parallel interface printers
- Min-Disk card-edge for connection of up to four Radio-Shack Mini-Disk Drives
- Expansion board card edge for use with the RS-232C Interface (or other custom designed PCB)
- Bus card edge, which duplicates the signals present at the TRS-80 card edge.
In addition to these connections, the Expansion Interface provides a 25mS heartbeat interrupt to the computer (RTC).
The Expansion Interface is not compatible with a Level I TRS-80, only Level II.
The TRS-80 Mini Disk 26-2161B is identical to the 2160B unit, except it lacks the terminating resistor set and is not supplied with a connecting ribbon cable. User's were intended to purchase one 2160B unit initially and buy additional 2161B drives to expand to the maximum four drive system.
The TRS-80 Mini Disk is a small version of a floppy disk. The disks are 5.25" in size ('small' in comparison to the 8-inch disks that were commonly used on larger systems at the time). The number 0 disk can contain about 58,8000 bytes of file space, and each additional disk will contain 83,060 bytes of file space.
To use the TRS080 Mini Disk, you need a 16K Level II BASIC TRS-80 microcomputer or a 16K Level I BASIC TRS-80 microcomputer which has been modified to Level II BASIC. You will also need the TRS-80 Expansion Interface that is distributed under three different part numbers (the difference in the three part numbered units is the amount of additional RAM they provide).
The 26-1160B Disk Drive is supplied with a ribbon interconnect cable and is fitted with a set of termination resistors. Therefore in a multi-drive system, the 1160B unit should be furthest from the computer end of the cable. Additional Disk Drives should be of the 1161B type, which are not fitted with the termination resistors.
This dual disk drive unit by Akhter sits over the top of the BBC Micro, providing two 5.25" disk drives (individually switchable between 40 and 80 track mode). It also provides a safe place for a monitor such as the Microvitec Cub.
This external 1.44MB floppy disk drive connects to the Macintosh Portable range of computers.
The Epson H20EU expansion unit for the Epson HX-20 computer contains an additional 16K of RAM and sockets for up to 32K more.
This is an HP Apollo Sereis 700 workstation. It ran on the PA-RISC CPU and had up to 64MB RAM.
This adapter box for the ZX Spectrum appears to be designed to connect to Radioteletype (RTTY) equipment. It has a switch to select between 45 and 50 baud rates.
This accessory adds 16KB additional RAM to the Sinclair Spectrum.
For use with:
- All Atari computers including ST
- Commodore 64/128, VIC 20, Amiga
- Amstrad/Schneider CPC
- Spectrum and Spectrum Plus (with suitable interface)
- BBC and Electron (with suitable interface)
This external floppy drive was manufactured by Apricot Computers.
This 8-bit ISA expansion card from Western Digital supports two MFM-format hard drives with up to 16 heads and 1024 cylinders each using the ST506/ST412 interface. It is jumper configurable for secondary addressing and default drive tables. The built in ROM BIOS supports non-standard drive types, virtual drive formatting, dual drive operation, bad track formatting and dynamic formatting. This board features a power connector for filecard applications and it will also operate in AT systems.
This generic floppy controller card was part of an Elonex XT-clone PC. It uses the standard UM8272A controller chip capable of controlling up to four floppy drives. Somewhat unusually, the card has an external DC37 connector allowing the use of the second pair of drives (most manufacturers omitted the external port, assuming that users would not have more than two floppy drives in their PC).
This 8-bit ISA floppy controller card is a generic Taiwanese clone. It can control up to two floppy drives through the internal edge-connector using a UMC8272A floppy controller chip. The board has a position for an external DC37 connector to control two more drives but the manufacturer chose not to populate it. The previous owner has soldered pin headers onto the reverse of the card so the two extra drives could be mounted inside his computer.
Display is 12 digits, green vacuum-fluorescent tubes, with half-height zero.
Main integrated circuits - Fairchild SL35085X (here date coded early 1972), NEC uPD354D (here date coded late 1971).
188 x 267 x 74 mm (7.4" x10.58" x 2.9").
Manufactured about early 1972.
Made in Japan,
For Imperial Typewriter Company, Leicester, United Kingdom.
10 digit eletronic calculater with roll.
Sharp Pocket Computer complete with printer and microcassette recorder.
Powerful BASIC IN 24KB ROM
8-bit CMOS processor
The Compaq SLT/286 (1990), prices starts at $5,399.
The machine offers a bright high-resolution display that supports the VGA video standard, the first laptop with that feature. It has a 12-megahertz 80C286 processor, a new low-power chip that is among the faster 80286 microprocessors, and it is certainly capable of handling most applications. And it has a detachable keyboard, another first among laptops.
It is 8 1/2 inches deep - 2 to 3 inches less than the other leading laptops at the time
The SLT/286 provides mass storage in the form of a 20-megabyte or 40-megabyte hard disk drive. The shock-mounted drive is a new design that can withstand up to 80 G's of impact, or a ride in the trunk of a New York City taxi, whichever comes first. Data is transferred through a high-capacity (1.44 megabyte) 3.5-inch diskette drive. An optional 2,400-baud internal modem is $599.
At 14 pounds, including the battery and the hard disk, the SLT/286 strains the definition of laptop. Still, it is five pounds lighter than Compaq's lunchpail-shaped Portable III, a significant difference among portables. Most important, it runs for three hours on one battery charge. An optional backup battery pack ($129) weighs two pounds.
One drawback of the machine is that it does not support color, but then neither does any other laptop. (High-resolution flat-panel color displays will begin arriving next year.) Another surprise is that Compaq, which has forged its reputation for high-performance machines around the 80386 microprocessor from the Intel Corporation, did not introduce an SLT/386. While the 12-megahertz 80C286 is a better-than-average chip, it is no match for the 386 chip. Michael Swavely, Compaq's vice president for marketing, suggested in an interview that the power demands of the 386 chip had reduced the SLT's battery life to unacceptably short periods. The fast 286 chip, he said, offered the best balance of performance and battery life.
Model 2680 SerialNo: 1903HU4H0642
This third-part Game Boy accessory pack from joytech includes:
- Light magnifier lens. Provides up to 80% larger visible area; illuminates screen in low light conditions.
- Recharagable battery pack. Provides up to 10 hours of continuous game play.
- Power adaptor/charger.
- Dual link cable.
- Carry case.
Hand scanner with Touch-Up software. Compatible with Atari ST and Mega computers.
- GoldenImage hand scanner
- Interface kit
- AC power adapter
- Touch-Up application software
- User manual
The NES Zapper was an electronic light gun accessory for the Nintendo Entertainment System (NES) and the Japanese Famicom. It was released alongside the launch of the NES in North America in October 1985.
The Zapper allows players to aim at the television set display and "shoot" various objects that appear on the screen such as ducks, clay pigeons, targets, cowboys, criminals or other objectives. The Zapper is used on supported NES games, such as Duck Hunt and Wild Gunman. The Zapper could also be used on the title screens of games to move the cursor—done by pointing the device away from the screen and pulling the trigger—or starting the game (pointing at the screen and pulling the trigger).
Unlike the European version, there was less concern about the lightgun being confused with a real firearm and the original grey colourscheme could be used.
- SVI 318/328 computers
- Atari 400/800, 600XL
- Atari Video Computer System
- Search Video Arcade
- Commodore C64
- Commodore VIC-20 computer
- NEC PC-6001 computer
This modern accesory for the BBC Micro connects through the user port and allows a modern MMC card to be mounted as a DFS drive.
This add-on module for the ZX Spectrum allows programs to include sound statements.
The IRMA Decision Support Interface allows a standard IBM PC to fully emulate an IBM 3278 mainframe terminal. The on-board microprocessor and RAM allow the terminal screen to be maintained independently of the PC's normal display.
The board is marked as an FCC class A computing device, meaning it should not be marketed for use in a residential environment.
This Raspberry Pi kit was distributed by Google in partnership with OCR.
This combination floppy/hard drive was developed by PCML Ltd for the ICL One-per-desk (OPD).
The Memotech MTX512 was a Z80-based home computer released by Memotech in 1983-1984. While not fully compatible with the MSX series of computers, they were technically very similar. The MTX512 had 64KB RAM. The MTX512 supported plug-in ROM boards.
This early example of a flexible integrated circuit printed directly onto a plastic sheet was presented to the Centre for Computing History at the opening of the "ARM at 25" exhibit. Pragmatic Printing Ltd aims to develop ultra-thin and low-cost flexible microcircuits supported by ARM Holdings. The individual circuits are thinner than a human hair and can be embedded into a flexible surface.
The Acorn Econet terminal was designed to be used as a disklesss Econet station. It was essentially a BBC Master computer stripped of it's disk and cassette interfaces. The only ports provided were RGB and composite video and Econet.
Part of an electromechancial calculator used for calculating transfomer windings in early rail electrification projects.
Board, schematics, assembly listings.
Core memory board; circa 1972.
The Datal Action Replay pro is designed to be placed between the Sega Mega Drive and a game cartridge. By doing so, it is able to inspect or modify any accesses to the game ROM and is also able to override CPU accesses to system RAM. In this way, it allows the user to activate 'cheat codes' such as invincibility or level selects.
- Remote control with infra-red receiver for the Playstation 2.
- RegionX software to allow DVDs from any region to be played on a European Playstation 2.
A pair of printer control peripheral for the ICL System 25. Supports printer types 3441, 3443, and 3444.
This Z80-based business computer was released by Sord in 1980. It ran at 4MHz and had 128KB RAM. It could display 80x24 characters; graphics modes required a hardware upgrade. It had two serial ports; one parallel; and two cartridge slots.
Oric was a British designed and built machine. Oric-1
was released in 1983. Based on a 1 MHz 6502A CPU, it came in 16 KB or 48 KB RAM variants for £129 and £169 respectively, matching the models available for the popular ZX Spectrum
and undercutting the price of the 48K Spectrum by a few pounds. Both Oric-1 versions had a 16 KB ROM containing the operating system and a modified BASIC interpreter.
Oric was the name used by Tangerine Computer Systems for a series of home computers, including the original Oric-1, its successor the Oric Atmos and the later Oric Stratos/IQ164 and Oric Telestrat models.
With the success of the Sinclair ZX Spectrum
, Tangerine's backers had suggested a home computer and Tangerine formed Oric Products International Ltd to develop and release the Oric-1 in 1983. Further computers in the Oric range were released through to 1987 with Eastern European clones being produced into the 1990s.
For further details of the Tangerine company and our Tangerine Microtan 65 click HERE
The Oric-1 improved somewhat over the Spectrum with a chiclet keyboard design replacing the Spectrum's renowned "dead flesh" one. In addition the Oric had a true sound chip, the programmable GI 8912, and two graphical modes handled by a semi-custom ASIC (ULA) which also managed the interface between the processor and memory. The two modes were a LORES text only mode (though the character set could be redefined to produce graphics) with 28 rows of 40 characters and a HIRES mode with 200 rows of 240 pixels above three lines of text. Like the Spectrum, the Oric-1 suffered from attribute clash—albeit to a lesser degree in HIRES mode, when a single row of pixels could be coloured differently from the one below in contrast to the Spectrum, which applied foreground and background color in 8 x 8 pixel blocks. As it was meant for the home market, it had a built in television RF modulator as well as RGB output and was meant to work with a basic audio tape recorder to save and load data.
According to Oric about 160,000 Oric-1s were sold in the UK in 1983 with another 50,000 sold in France (where it was the top-selling machine that year).
The HP 9825B was a powerful fully algebraic desktop calculator.
Our two units were very kindly donated by QinetiQ from Great Malvern which was kindly arranged for us by Michael Hamer of QinnetiQ.
A Solaris workstation computer developed by Sun Microsystems.
Complete with 24" LCD Screen.
Magnetic tape drive for HP mini-computer systems.
Click on the PDF icon to download the user manual.
This third-party light gun connects to the Nintendo Famicom games console.
The Ericsson Portable PC was created by Ericsson in 1985. It was a small computer with a weight of 8 kg. It had a thermal printer, 4.77 MHz processor and 256-512 kB of RAM.
This peripheral board for the Open University Hektor II computer allows it to control a chart recorder.
The First Sense temperature sensor measures temperatures over a wide range (-20 to 110 celcius). Both sensors are designed to connect to a Universal Interface unit -- the exact model depends on the computer being used.
This expansion board for the BBC Micro allows up to 16 paged ROMs to be fitted or, in alternate configurations, software switched paged ROMs or paged RAM.
This expansion board for the Sinclair ZX81 allows it to produce sound.
This expansion unit for the ZX81 provides additional memory.
This expansion board for the Sinclair ZX81 allows to expansion boards to be plugged into the expansion bus.
This digital still camera from Sony was released in 2003 and saved images to 8cm recordable CD-ROM discs. It could connect to a computer through a USB cable.
- 5 megapixels effective resolution
- CD-R/RW 8cm (156MB)
- 3x optical zoom
- USB connection
- MPEG film mode
This expansion cartridge for the Acorn Electron allows you to connect a joystick.
This stereo sound sampling and output cartridge can record in high-quality stereo and output the same. The stereo editor program allows the user to load and edit samples and convert them between different formats.
This expansion pack for the ZX Spectrum allows you to connect a composite video signal to your computer and digitise it. Up to six 'pages' can be captured at one time and can be flipped between. Once digitised, the images can be saved to tape or disc.
Put everything you need on the keyboard with a Custom Keypanel Kit. You can assemble a dedicated Keypanel for each of your games or programs and produce an instant reference to the functions of each key. Just peel off, place on Keypanel... and play!
This device sits between a computer and a printer, capturing data as it is printed. Once a document has been printed once, additional copies can be printed at the press of a button without the computer being involved.
This expansion board for the BBC Microcomputer allows up to eight ROMs to be bankswitched into a single socket.
This third-party cartridge for the Nintendo Game Boy allows the user to enter special codes that modify the gameplay of any cartridge that is plugged into it. The pro version has a built-in 'game trainer' that allows the user to create tyheir own codes.