Click Here to visit our Sponsor
The History of Computing The Magazine Have Fun there ! Buy goodies to support us
  Mistake ? You have mr info ? Click here !Add Info     Search     Click here use the advanced search engine
Browse console museumBrowse pong museum


ZX81 T-shirts!

see details
ZX Spectrum T-shirts!

see details
Ready prompt T-shirts!

see details
Atari joystick T-shirts!

see details
Arcade cherry T-shirts!

see details
Spiral program T-shirts!

see details
Battle Zone T-shirts!

see details
Vectrex ship T-shirts!

see details
Atari ST bombs T-shirts!

see details
C64 maze generator T-shirts!

see details
Moon Lander T-shirts!

see details
Elite spaceship t-shirt T-shirts!

see details
Competition Pro Joystick T-shirts!

see details
Pak Pak Monster T-shirts!

see details
BASIC code T-shirts!

see details
Vector ship T-shirts!

see details
Breakout T-shirts!

see details
Pixel adventure T-shirts!

see details

M > MATSUSHITA  > National JR 100   

National JR 100

The National (also known as Panasonic or Matsushita in other countries) JR series was pretty popular in Japan. Small quantities were sold outside Japan, in New Zeland among other countries.

Little is known about the first system of the range (please help!). It was obviously an initiation machine with black & white display and rubber keyboard.

The JR 100 was followed by the JR 200.

Thanks to Murray Moffatt from New Zeland for most of the information and pictures.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.
Please consider donating your old computer / videogame system to or one of our partners from anywhere in the world (Europe, America, Asia, etc.).


More games for National JR-100 can be found here and they work :

Saturday 23rd September 2023 (ÄŒesko)

I found a some more software at They also link to a JR-100 emulator.

Monday 5th December 2022
Murray Moffatt (Auckland, New Zealand)

I had it when I studied at Sec. 2. So good memories!

Tuesday 2nd March 2021


NAME  National JR 100
TYPE  Home Computer
YEAR  1981
BUILT IN LANGUAGE  Basic interpreter
KEYBOARD  Poor rubber keyboard
CPU  MN 1800A (6802 compatible)
SPEED  890 KHz
RAM  16 KB (up to 32 KB)
TEXT MODES  32 chars. x 24 lines
GRAPHIC MODES  64 characters with 6 x 7 dot matrix, 64 semi-graphic characters with 8 x 8 matrix, 32 User Defined Graphics with 8 x 8 matrix
COLORS  Monochrome
SOUND  Buzzer
SIZE / WEIGHT  Unknown
I/O PORTS  Monitor, Expansion, Tape
POWER SUPPLY  Model JR-A12 power adaptor., Output: +7.8V (700 mA), -8V (10 mA), +17V (130 mA)
PERIPHERALS  An expansion unit (JR-U05) was created which added an extra 16 KB RAM, joystick and RS232 port. It was only available in Japan.
PRICE  NZ$299 when introduced in New Zeland in 1983

Please buy a t-shirt to support us !
Ready prompt
ZX Spectrum
Arcade cherry
Spiral program
Atari joystick
Battle Zone
Vectrex ship
C64 maze generator
Moon Lander
Competition Pro Joystick
Atari ST bombs
Elite spaceship t-shirt
Commodore 64 prompt
Pak Pak Monster
Pixel Deer
BASIC code
Shooting gallery
3D Cubes
Pixel adventure
Vector ship

Related Ebay auctions in real time - click to buy yours

see more Matsushita  National JR 100 Ebay auctions !

Click here to go to the top of the page   
Contact us | members | about | donate old-systems | FAQ
OLD-COMPUTERS.COM is hosted by - NYI (New York Internet) -