HP 9825a

[Geoff Quickfall]

Well I am obviously having fun here.

Here is a simple program running on the 9825a demonstrating prompt, error test, looping. Right out of the manual, it is prompting for a value V, then testing for negativity, re-prompting for positive value or taking square root of the positive value:

9825a running simple program

I will be increasing the RAM by 8KBs and then, with the tape drive modified I will try some heavier programming and storing. More fun!