HP-27S: Scientific calculator "do-it-all"
Just received my new acquisition. Needs some dusting.
Made in Singapure. Year of manufacture: 1991, week 22.
Clean battery compartment. IR LED for printing looks good as well.
Power On message. I can tell the same in a bad day...
Pressing CLR to get rid of the memory loss...
Some shots of the mandatory Self Test sequence. Pressing CRL + LN...
Display test...
ROM Test.
DRAM test.
URAM test.
Keyboard test.
Tested OK!
Full PI precision in the HP universe.
Almost 7 KByte of memory!
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