Texas Instruments TI SR-51A

Serial Number 3676RCI (hard to read): 36th week, 1976, Rieti, Italy.
Accessories Pouch

Texas Instruments SR-51A Handbuch (German)

Texas Instruments super slide-rule calculator AR-51A Operating Guide

Built-in battery pack with dead batteries
Condition Extremely poor! Lots of scratches around the ON switch, golden frame worn off, keyboard dirty (but cleanable), three rubber feet missing, back label unreadable
Acquired 15.9.2002
Type, Precision, Input Mode Scientific, 10 BCD digits, exponent 99, Algebraic
Programmable No
Memory 3 storage registers (1, 2, 3), not permanent
Special features
Original Pricing, Prduction Introduced June 1975 for $224.95 (according to the Datamath Museum).
DM 348 in 1976 (according to Kurt Pribil).
Batteries Built-in battery pack, external power supply 4.5V (plus on center)
Links Datamath Museum
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