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jhallen · (This post was last modified: 08-09-2021 02:26 AM by jhallen.)

I remember these, thought they were pretty good looking calculators when they came out. I think the Radio Shack version of it looks even better.

But I find the user interface to be somewhat inefficient- I wondered if they were trying to avoid looking too much like Casio fx-4000p:

There is no backspace, only delete (and it's shifted).

When you hit Shift-ANS, it puts the actual number in the edit buffer, not symbolic "ANS". RCL does the same thing. You could make arguments either way for this.

You have to hit Alpha after RCL, even though the variable must be a letter.. why doesn't it auto-Alpha?

You can "replay" the previous equation, but it's weird (as a Casio user) that you have to hit Shift-EQN to get it back instead of left arrow.. but whatever.

I like the formula memory, though there are too many prompts when using it. Like do you really want to calculate this formula YN?

Oh one more thing: is this possibly the first calculator with a hard slide-on cover? Maybe first scientific calculator like this..