|Type Pocket computer|
Entry mode Infix, BASIC,
Display size 24 characters
Display type LCD dot-matrix
|Processor CPU: Hitachi SC61860 (8-bit CMOS)|
The Sharp PC-1403 was a small scientific calculator and pocket computer manufactured by Sharp. It was the successor of the Sharp PC-1401, and had better display, more RAM and better system software.
Manufacturing started in 1986.
Calculations could be performed in two modes CAL and RUN. In the former the PC-1403 would behave like a normal scientific calculator at the time with formulas entered in algebraic logic or in RUN mode BASIC statements could be entered for immediate execution and print out. The later was similar to the Direct algebraic logic employed by modern calculators.
The programming model employed was unstructured BASIC for which the PC-1403 distinguished between RUN and PRO mode. The later being used to enter and edit program and the former being used to execute them.
Here is a sample program that computes the factorial of an integer number from 2 to 69. It can be called by pressing
F in run mode. The program is 66 bytes long.