HP Virtual Museum 9100A desktop calculator, 1968

Hp 9100a. Mais qui a inventé l'ordinateur personnel ? Du HP 9100A à l'IBM PC The Hewlett-Packard 9100A (HP 9100A) is an early programmable calculator [3] (or computer), first appearing in 1968 The 9100A is a programmable, electronic calculator which performs operations commonly encountered in scientific and engineering problems

In 1968 HP introduced the HP 9100A featuring: Floating-point math with a range of 10-98 to 10 99; Log (natural and base 10) As various portions reached the final prototype stages, responsibility for these was assumed by the Loveland group headed by Bob Watson in engineering and by Jack Anderson in production

HP Computer Museum

In the mid to late 1960's electronic four function fixed-point calculators were brand new and typically cost $1000-$2500 The HP 9100A contained 2208 bits of coincident current memory using lithium cores The transfer of the 9100A from Hewlett-Packard Laboratories to the Loveland Division took place gradually rather than abruptly

HP 9100B The HP 9100A/B calculators are built with Flickr. Really a desktop computer, the 9100A combined Reverse Polish Notation (RPN)—a system for representing mathematical expressions without the use of parentheses—with a special algorithm that could handle trigonometric and logarithmic functions. HP sold the 9100A as a calculator because at the time the perception was that a computer had to be big to be credible

HP Computer Museum. As various portions reached the final prototype stages, responsibility for these was assumed by the Loveland group headed by Bob Watson in engineering and by Jack Anderson in production The HP 9100A contained 2208 bits of coincident current memory using lithium cores