- ENGINEERING CALCULATOR TEXAS FULL
- ENGINEERING CALCULATOR TEXAS PLUS
- ENGINEERING CALCULATOR TEXAS SERIES
O The SR-51 had been marketed only a few months when INFO: o TI replaced the SR-50 and SR-51 in mid-1975 with PRODUCTION: Introduced about March of 1975
ENGINEERING CALCULATOR TEXAS FULL
Three memory registers with full register arithmetic. % change, 20 different conversions, degree/radians switch, Hyperbolic trig functions, e^x, LNx, Log, 10^x, %, Trend line projection, random number generator, trig, Mean, variance, std deviation, Linear regression with X^2, sqrt(x), 1/x, y^x, x root y, factorial, permutations, O TI-50 Simline LCD serise replaced this popular LED version
ENGINEERING CALCULATOR TEXAS SERIES
O This machine possibly works with the PC-100 series O It also has a more business-like case/key color scheme. The SR-52, SR-56, SR-51A to reduce costs. INFO: o This model was introduced to standardize this model with O It also marks the start of Texas Instruments assault on O Also has a silver area that comes down below the first Orange, and gray keys, along with white for digit entry. O Like the SR-11, this machine has brightly colored blue, INFO: o The first SR-50 was first marketed by direct mail. One memory register with store, recall, and sum. Radian conversion and vice versa, degree/radians switch, Hyperbolic trig functions, e^x, LNx, Log, Degrees to X^2, sqrt(x), 1/x, %, y^x, x root y, factorial, trig, Power consumption (9V) is 25uA when off, 14-15mA when on Same functions as TI-30, but no power-saving "walking dot" mode Has a 9-digit fluorescent green display (8 digits + sign/DRG-symbols)ĭisplay is not LED, but VFD (Vacuum Fluorescent), 9 digits. O Jan Kronlund from Finland has a TI-45 with a blue So perhaps the correct year might be 1979.ĭISPLAY:ę-digit fluorescent blue-green display (not ~12 LEDs) MEMORIES:ē (thanks Andre from Wuppertal, Germany)Ĭonstant Memory (in beautiful black, I remember there wasĪnother color, maybe silver) was made in Italy, the number is 4179 PCI, INFO: o The best selling calculator ever. INFO: can almost the same as the TI 30, but has no hyperbolicįixed in a map like the typical Japanese calculator Switches: None (Key 4 = OFF, Key 5 = ON/C) Keys on left and remainder on top row are blue. Of x], square root, squaring, reciprocal, 179.95. Model SR-20 desk calculator with 14-character display has eight specialįunction keys-pi, epsilon, exponent, factorial. O Its color scheme was much like that of the SR-11, with O The conversions are very slow, like several seconds. O For example decimal 2.5 converts to 2.8 in hexadecimal Performed on floating-point numbers, not integers. O A very unique feature is that these conversions are
O There are 3 LEDs in the keypad area which light to INFO: o The SR-22 hexadecimal calculator, It converts between PRODUCTION:Ěnnounced on September 11, 1973 Left-Center of Keyboard AUTO/MAN Base Change
ENGINEERING CALCULATOR TEXAS PLUS
SR-20 was a slightly advanced desktop calculator.įUNCTIONS:ğour plus octal, decimal and hexadecimal conversionĭISPLAY:đ2 neon gas discharge display (10 + 2) INFO: o Possibly the last TI slide rule calculator that did X^2, sqrt(x), 1/x, y^x, e^x, LNx, Log, One memory O Superseded by the SR-16II within a year. INFO: o The SR-16 was a Scientific calculator. PRODUCTION: Introduced on October 25, 1974 INFO: o The Sr-11 was like the SR-10, but with pi and a constant.įUNCTIONS:ğour plus 1/X, X*X, Square Root of X, Pi INFO: o The "SR-10" logo is situated in the upper area ofįUNCTIONS:ğour w/Exponent, square root, square, reciprocal and pi INFO: o The "SR-10" logo is situated in the escutcheon More History at Other Later LCD Models pageįUNCTIONS:ğour w/Exponent, square root, square, reciprocal The TI SR-50 adds trigonometric and hyperbolic functions to the technology available on the TI-2500 Datamath™ calculator, as well as logarithms and their inverses. TI introduces its first scientific calculator.
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