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Amstrad NC 100
Computers
Portable
United Kingdom
1992
Z80
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NC 100
/media/museum/photos/amstrad_nc100_system_2.jpg
/companies/amstrad
Amstrad
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NAME
NC 100
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MANUFACTURER
Amstrad
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TYPE
Portable
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ORIGIN
United Kingdom
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YEAR
August 1992
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BUILT IN LANGUAGE
BBC Basic
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KEYBOARD
Full-stroke 64 keys
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CPU
Z80
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CO-PROCESSOR
NEC custom chip (various I/O and memory management)
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RAM
64 KB
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ROM
Unknown
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TEXT MODES
80 char x 8 lines
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GRAPHIC MODES
480 x 64 pixels
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COLORS
bluish grey LCD
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SOUND
Beeper
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SIZE / WEIGHT
29,5(W) x 21(D) x 2,8(H) cm. / 1 Kg
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I/O PORTS
Parallel Centronics, Serial RS-232
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BUILT IN MEDIA
1 MB PCMCIA slot
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OS
BBC BASIC, word processor, diary, calculator, address book, serial terminal in ROM
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POWER SUPPLY
External 7.5V AC adaptor or batteries
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PRICE
£199
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736
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NC-100
Here a German version (QWERTZ keyboard)
/media/museum/photos/amstrad_nc100_system_3.jpg
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MAIN MENU
Each firmware application can be called by using a combination of coloured keys:\
• Word processor (Yellow + Red)\
• Calculator (Yellow + Green)\
• Calendar/Diary (Yellow + Blue)\
Or by Ctrl keys:\
• BBC BASIC (Ctrl-B)\
• Games (Ctrl-G)
**(1)** RAM backup battery housing (CR-2032)\
**(2)** Main battery housing (4 x AA size)\
**(3)** Removable stands which allow the NC-100 to be used in tilted position\
**(4)** Firmware 256 KB ROM chip. Can be easily replaced. Normally covered with a plastic lid.
The main board occupies one half of the case area, the keyboard occupies the second half. The board was made by Nakajima in Japan. The LCD display was made by Sanyo.
**(1)** AA battery housing\
**(2)** PCMCIA card slot\
**(3)** CMOS, 6MHz version of the Zilog Z80 processor\
**(4)** Keyboard connectors\
**(5)** Real time clock chip\
**(6)** Custom chip, made by NEC, in charge of memory management, keyboard and various I/O\
**(7)** LCD display connector\
**(8)** I/O chip (Parallel to Serial converter)\
**(9)** 2 32K x 8-bit CMOS chips (43257) hold the 64 KB main RAM\
**(10)** Loudspeaker connector\
**(11)** The 256K ROM chip is mounted to face the bottom side of the case\
**(12)** External power supply jack and power push-button\
**(13)** Beeper\
**(14)** LCD Contrast knob
**AMSTRAD NC-100 - USER MANUAL**\
written by Amstrad
compiled/archived by Charles Da Silva\
type of document : PDF\
source : [Amstrad.CPC](http://amstrad.cpc.free.fr/)
By 1992, once fast-growing Amstrad was struggling. Its reputation as a PC maker had been undermined by a batch of dodgy Seagate disk drives at the same time that bigger-name vendors were engaged in a price war, squeezing Amstrad out of the market.
The NC 100, NC 150 and NC 200 were three products that its founder Alan Sugar was hoping would help revive the company's fortunes.
Cutting edge, they were not. Both were based on old eight-bit Zilog Z80 microprocessors. Curiously, both machines came with a BBC Basic interpreter on which users could develop their own applications.
The NC 100 was a £199 notebook computer the size of a piece of A4 paper, with a full size keyboard and a "letterbox" screen at the top, offering 80 columns by 8 lines.
It had an RS232 serial port and a Centronics parallel port for printer and communications. Built-in were 64 kilobytes of memory, expandable to 1 megabyte with the addition of an add-on memory card.
"If you can't use this new computer in five minutes, you'll get your money back," boasted the company in its launch advertising. For ease of use, it had four colour-coded keys giving instant access to a number of built-in applications, including a word processor, calculator, diary and address book.
At a time when an entry-level lap-top computer cost more than £2,000 and the sub-notebook had not been invented, the NC100 and NC200 offered a good value alternative for those with basic computing needs, such as word processing on the move.
All the NC computers were made in Japan by Nakajima. The company also sold its own version of the NC-100, called ES-210.
Thanks to Graeme Burton for information about NC series computers.