A calculator for Commodore 64 and other CBM BASIC models #VintageComputing #Commodore #BASIC
Dave Van Wagner has created a new desktop calculator for Commodore, programmed in BASIC.
First was the design of the user interface, by creating PRINT statements. Used reverse text to make a rectangular box with the keys displayed.
How to click on a key? I’m so used to a mouse or touch interface. Oops, Commodore doesn’t have that usually, or not so easy. Ignoring the 1351 mouse for now. Most Commodore users are used to using the keyboard or joystick. Forget the joystick, this is not a game! Keyboard entry one key at a time will do just fine. Note that ENTER also acts as =, and DEL is equivalent to ←, and X is a synonym for *.
Entry of digits was the first processing, accepting up to the limit of the display.
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