It has a very readable one-line screen, and its keyboard is larger than most modern PDA's, almost large enough for touch typing. Below the keyboard, on the right side is a slot for magnetic cards, used to store programs and data. Cards were inserted and pulled through by hand. Each card holds 650 bytes.
The 75 series (no, I don't know what happened to the 75A and B) may actually be the world's first PDA. It has an appointment mode with alarms and can be used to edit and save text files.
It came with BASIC, and its filing system could handle files stored in RAM, in ROM, on magnetic cards, and on tape.
Both of mine came to me without power supplies; I am currently in the process of trading for another one with the power supply so I can get these up and running.
One of them came with a nifty little carrying case which features a section presumably for holding the bar code wand.
A very HP-ish computer
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