Technical Specification

Introduction date: Clock Speed: CPU: ACT Address Space: Memory: Display: Program Memory: Precision: Entry Method: Size: New price:

1. July 1977 0,18 MHz Arithmetic, Control and Timing chip (ACT): 1820-1596 12 Bit 30 storage registers, C-MOS technology light emitting diode, 10 digits, red 98 program steps 10 digits Reverse Polish Notation 127 mm x 63,5 mm x 25,4 mm (5" x 2.5" x 1") 195 USD

History

The HP-29C was the last calculator of the Woodstock family or "Series 20". The codename  of  it was "Bonnie". The HP-29C was followed by a printing version, the HP-19C and these two were called "Bonnie & Clyde". The heart of these calculators was the the ACT (Arithmetic, Control and Timing chip). For reducing cost and size this chip integrated arithmetic, register, control, -and clock driver circuit into a single package. The chip was able to address 4096 instructions directly with its 12 bit address space.

HP-29C	...the nice led display...

...the nice brain in white ceramic and gold...

...the nice brain of the HP-29C...

...under the display, the keyboard and display driver...

...the display...