203

1974

• Production : 1974
• Display : VFD 8+2
• Power : 3 x AA
• Made : Mexico


• Conversion calculator


• Additional information

8R

1975

• Production : 1975 - 1976
• Display : LED 8
• Power : 9V
• Made : Mexico


• Additional information
• Advertising

18R

1975

• Production : 1975 - 1976
• Display : LED 8
• Power : 9V
• Made : Mexico


• Additional information
• Advertising

14RD-II

1976

• Production : 1976
• Display : VFD 8
• Power : 3 x AA
• Made : Japan


• Additional information

24RD-II

1976

• Production : 1976
• Display : VFD 8
• Power : 3 x AA
• Made : Japan


• Additional information

44RD

1976

• Production : 1976
• Display : VFD 8
• Power : 3 x AA
• Made : Japan


• 16 functions scientific model


• Additional information
• Advertising

63R

1974

• Production : 1974
• Display : VFD 8+2
• Power : 3 x AA
• Made : Mexico


• 22 functions scientific model


• Additional information
• Advertsing

the 24K II

1976

• Production : 1976
• Display : VFD 8
• Power : 3 x AAA NiCd
• Made : Hong-Kong


• Additional information

the 20T

1977

• Production : 1977
• Display : VFD 8
• Power : 2 x AA
• Made : Hong-Kong


• Additional information