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S > SHARP  > PC-5000     


Sharp
PC-5000

The PC-5000 is the Sharps's first attempt to produce a laptop computer, and was one of the first clamshell style portable computer with the Grid Compass and the Gavilan.

So it is a clamshell style portable computer : when you open the PC-5000, the LCD screen (8 x 80) is lifted to reach its ''in-use'' position, and when you close the computer the screen tilts until it covers the keyboard.

There is an optional printer which can be mounted into the case of the PC-5000 (see picture).

The type of memory used here is quite special, it's magnetic bubble memories. The advantage is that it's quite fast and you can change the memory cartridges (64k or 128k each) in the computer. Thus you can reach 256k RAM, or you can insert applications stored on ROM modules. But the main drawback of theses memories, is that there are very expensive !

The PC-5000 uses MS-DOS but is not really PC compatible, although Sharp tried to sell it by focusing on this point.

Some good software was available for the PC-5000, including Easy-Writer II (wordprocessor), Easy-Comm (communications)and Easy-Planner (spreadsheet). There were sold together as the EasyPac (some sources say that Easy-Report was included).
EasyMenu was the menu-interface built-in the PC-5000.

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I had this machine in the late 80's.
Nice, long-lasting battery. The printer was a very keen feature, and I used to run Borland Turbo Pascal on it to develop small programs. Ah, memories...
RT

          
Wednesday 20th February 2002
Rob Taylor (Whitby, Canada)

 

NAME  PC-5000
MANUFACTURER  Sharp
TYPE  Portable
ORIGIN  Japan
YEAR  1983
BUILT IN LANGUAGE  Microsoft Basic 1.0
KEYBOARD  Full-stroke 72 keys with 8 function keys and arrow keys (English, German and French versions)
CPU  Intel 8088
SPEED  4.77 Mhz
RAM  128k, up to 256k (Magnetic Bubble Memory, 64k and 128k modules)
ROM  192k (64k system program + 128k for Basic/MS-DOS)
TEXT MODES  80 chars x 8 lines (LCD screen)
GRAPHIC MODES  640 x 80 dots
COLOrsc  Monochrome
SOUND  Beeper
SIZE / WEIGHT  325 (W) x 305 (D) x 85 mm (H) / 4.5 Kg
I/O PORTS  Bubble memory cartridge slot
Serial port (proprietary)
RS232c port
Bus expansion port
Tape-recorder
OS  MS-DOS
POWER SUPPLY  12vdc 850mA / + -(O- -
PERIPHERALS  Built-in thermal transfer printer (optional), double 5''1/4 disk-drive (360k), numeric keypad
PRICE  3506 (France, 1985)
£1195 (U.K., 1984)
350 000 yens (Japan, 1985)





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