TI-57
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The TI-57 is a programmable calculator made by Texas Instruments. There were three machines by this name made by TI, the first was the TI-57 with LED display released in september 1977 along the more powerful TI-58 and TI-59. It had 50 program steps and 8 memory registers. Two later versions named TI-57 LCD and TI-57 LCD-II have a LCD display, but were less powerful (ran much slower) and had much less memory : 48 bytes to be allocated between program 'steps' and storage registers.
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