WebThe miniature calculator described in the new TI patent (editor's note - this was the 'Cal-Tech') was the result of work done at TI in the mid-60s. The patent (Number 3,819,921), originally filed in 1967, was awarded to TI June 25, 1974. This miniature calculator (the world's first) employed a large-scale integrated semiconductor array ... WebJan 3, 2014 · Sinclair Cambridge Programmable (1975) Sinclair’s calculator range expanded tremendously in the early 1970s, with many …
Radio Shack EC-490 Handheld Electronic Calculator
WebGet the best deals on RadioShack Vintage Computers & Mainframes and find everything you'll need to improve your home office setup at eBay.com. Fast & Free shipping on many items! ... Radio Shack TRS-80 Color Computer 2 Model# 26-3134 With Box And Color Basic Book. $249.99. $24.34 shipping. WebKnown also as Tandy outside North America, Radio Shack has sold many OEM calculators and pocket computers since the early years. Their impressive lineup included machines from Casio, Sharp, Sinclair and Texas instruments; they also sold pocket computers under their popular TRS-80 label, machines that were in fact relabelled … sharks fish and chicken columbus ohio
RadioShack Handheld Calculators for sale eBay
WebThis small, thin, flat handheld electronic calculator has a metal case and an array of twenty-four rectangular plastic keys. The ten digit keys and decimal point key are white. The total key, four arithmetic function keys, four memory keys, change sign key, % key, and square root key are brown. The clear/clear entry key is red. The on/off switch is to the left … WebThe Radio Shack EC-220 (1976) is a rebadged Rockwell 8R (1975). This is a typical L.E.D. display 4 function handheld calculator. The National Semiconductor "Mathematician" (1976) is another early scientific … WebApr 11, 2024 · Radio Shack EC-21 (Blackjack 60-3011) 5: Radio Shack EC-200: Radio Shack EC-300 21: Radio Shack EC-314 Biorhythm Computer/Calculator (Kosmos 2) 11: Radio Shack EC-415 21: Radofin 1660 39: Ricoh Ricomac 1210P 42: Ricoh Ricomac 1221P 42: Rockwell 8R 21: Rockwell 10R 5 + 27: Rockwell 18R and Rockwell 76 21: … popular tattoo locations for men