Manufacturer: 
Sharp Corporation 
Model Number: 
CS 22C (Compet 22) 
Known Variants: 
CS 22A 
Serial Number: 
811222 
Date of Manufacture: 
February, 1968 
Manufactured In: 
Japan 
Original Price: 
$1175 
Weight: 
8 3/4 Pounds 
Size: 
11 5/8" Wide, 12 1/2" Deep, 4 5/8" High 
Power Requirement: 
12 Watts, 120VAC 50/60Hz 
Display Technology: 
Multiplexed Nixie Tube, 1/2" Digits, RightHand Decimal 
Logic Technology: 
83 Hitachi HD70xseries MOS SmallScale IC's:

Digits of Capacity: 
14 
Decimal Modes: 
Fixed at 0, 2, 3, 4, or 6 behind decimal 
Arithmetic Logic: 
Arithmetic for addition/subtraction 

Algebraic for multiplication/division 
Math Functions: 
Four Function 
Constant: 
Keyboard Switch (K) for multiply/divide 
Memories: 
1 accumulating memory register with M+/M 
Performance: 
50 KHz Clock Frequency 

Add/Subtract: 49ms 

Multiply: 376ms 

Divide: 440ms 
Features: 
Selectable RoundOff Digit Position 

Sliding Digit Grouping Indicators 

Lighted Multiply and Divide Function Keys 

True Negative Number Indication 

Overflow detection & indication 