PROGRAMMABLE CALCULATOR TI59 AND PC-100c PRINTER, 1970's

The TI-59 was an early programmable calculator, manufactured by Texas Instruments from 1977. It was the successor to the TI SR-52, quadrupling the number of "program steps" of storage, and adding "ROM Program Modules" (an insert-able ROM chip, capable of holding 5000 program steps.) It was one of the first LED calculators. Also available for the TI-59 was a thermal printer (the PC100C); the calculator was mounted on top of the printer. It could print out a hard copy of the calculator's program, where the instructions were listed with the same alphanumeric mnemonics as the keys , not just the numeric key codes.

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• I scarcely used one of this as an entry Business Analyst with Exxon in Puerto Rico, circa 1984 and it was already regarded as obsolete. It had several magnetic cards with different business, financial and statistical applications. Around two months after I started using the TI, a new Personal Computer was installed in my desk: a brand new Wang PC with a Winchester hard disk of scarcely 8GB storage memory.
  .......... Rolando Aponte, Trujillo Alto, Puerto Rico, 10th of September 2013
  
  

A1459