HP-22S

By admin , 15 December 2015
22S
Description

An algebraic scientific/statistics calculator. This model didn't have a four level history stack but still made the previous result available via the LAST key and a SWAP key allowed the numbers surrounding an operator to be reversed. (eg 5/25 SWAP yielded 25/5.) The calculator had a single line dot matrix display that could display either a menu or a number.

Year First Manufactured
1988

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