Tracing back to the reliable Klixon™ switches and using double shot injection molding keys, the SR-51 might be together with the SR-50 TI's most reliable calculators ever produced. Time will tell. Don't miss the rare SR-51 Clear-Case Prototype and a very early SR-51E, also known as SR-51 (Engineering Sample).

Students can use the SR-51-II to help them with complex statistical problems as well: mean, variance, standard deviation and correlation among with seven unit conversions by direct key. It has three addressable memories with direct memory arithmetic and memory/display exchange.

The calculator has a jack for a recharger/adapter along the back edge. A sticker on the back gives codes entered to convert from common measures to metric measures. It reads in part: TEXAS INSTRUMENTS (/) super slide rule calculator (/) SR-51. It also gives the serial number SR51 0048134. Above the sticker is a compartment for a battery pack.

Texas Instruments SR-51A (Version 1) The SR-51A was introduced shortly after the SR-51 to reduce manufacturing costs. You won't notice too much differences to the SR-51, the keyboard layout kept each key on it's place, only the colors changed.

2020年10月15日 · Scan of bookSR-51-II User's Guide by Texas Instruments [1976]User's Guide in English, French, German and Italian. Skip to main content. Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. ... SR-51-II User's Guide by Texas Instruments [1976] Bookreader Item ...

2024年9月15日 · The SR-51 was introduced in January of 1975 and was soon replaced by the SR-51A in June just a few months later (which needless to say makes the SR-51 very rare). The SR-51A was an improved version of the SR-51.

2021年3月28日 · The SR-51A is the next step after the short lived SR-51 calculator and it was the high-end calculator in the Texas Instrument line in 1975 together with the lower prices SR-16 and SR-50A. The SR-51A has the same functionality as the SR-51.

The Texas Instruments SR-51-II is a scientific calculator with 8 digits precision and algebraic logic. It has 58 functions, 40 keys, and an LED (light-emitting diode) display typical of calculators of this era.

Texas Instruments SR-51-II Manual, 1976 (English, German, French, Italian) Condition: Excellent front and back: Repairs, Comments: The original rechargable battery pack was dead so I cut it open, removed the rechargeables and installed two normal AA cells. Acquired: 19.11.2002.

The Texas Instruments SR-51-II is a scientific calculator with 8 digits precision and algebraic logic. It has 58 functions, 40 keys and an LED (light-emitting diode) display, typical of calculators of this era.