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Old Calculator Museum Advertising & Documentation Archive

Advertisement for the Sharp Compet 22(CS-22C) electronic calculator
Electronics Magazine, July 7, 1969


This is an advertisement for an updated version of the original Sharp Compet 22 (Model CS-22A), which apparently relied on more sophisticated MOS integrated circuits to make a new model of the calculator designated the Model CS-22C. Functionally the CS-22A and CS-22C were identical, but the CS-22C was priced a bit lower than the original CS-22A due to the reduction in circuit board complexity brought on by the use of fewer, more complex ICs.