Sharp electronic organizers with the IC card slot (Wizard OZ/IQ/PA/PI series)

[Akuji]

When Sharp launched the PA-7000 electronic organizer in the Japanese market in January 1987, it provided it with a simple calculator. Introduced at the end of that year, the PA-7C12 "Technical Calculation Card" turned the device into a full-fledged engineering calculator.



In addition to standard functionality present in devices of this class (107 different functions according to Sharp), this card has several distinctive features:
- 47 built-in scientific constants like the speed of light in a vacuum or Planck's constant (their names are in Japanese; otherwise, the card can be utilized without knowing that language)
- Two-variable statistical calculation function that can calculate correlation coefficients, estimates, etc. from two related samples
- Playback function that recalls a previously executed expression out of 160 recent calculations stored in the card's memory
- Last Answer function allows one to use the calculation result of the previous expression at any position in the following expression
- Ability to assign a value to any of the 26 keys of the Latin alphabet for their quick recall





In 1990, Sharp released a similar card, OZ/IQ707 "Scientific Computer Card," for Western organizers OZ/IQ. The main difference was the presence of a built-in BASIC interpreter, allowing one to program directly on the organizer. A similar card for the Japanese market, PA-9C3 "Hyper Function Program Card," was released in 1992, but it supported only the advanced line of DB-Z organizers (PA-9xx0), which had the same CPU core as their western counterparts.