Expensive noise-suppressing design techniques were therefore unnecessary, and further cost reductions were realized.Īs a result of these cost (and space) economies, Friden engineers were able to upgrade performance without corresponding ![]() Possible noise problems.but none developed. With both printer and electronics combined in a single chassis, Friden engineers were concerned with The high noiseimmunity of TI circuits also provided an unexpected bonus. Means lower manufacturing costs, but also greater reliability and convenience for the user. They packed up to 662 gates on only six compact circuit boards by selecting optimum combinations of multiplegate DTL and complex-function TTL integrated circuits. Since June of 1966, they have been making possible substantial reductions in both costs and complexity.įriden engineers took advantage of TI's broad IC capability to develop a low-cost, single-chassis design combining both electronics and printer in a single unit. These MSI units recirculate all arithmetic and memory information handled by the machines. Three custom TTL ring counters form the heart of Friden's sophisticated "computerized" calculators. ![]() TI combined the equivalent of 93 gates in just three 24-lead MSI arrays to help Friden engineers reduce package count, circuit boards a nd overall costs of their new 11 electronic printing calculators. These broad product-line capabilities significantly reduced Friden's procurement problems. ![]() ![]() MSI from TI helps Friden cut costs of "computerized" calculatorsįor the Friden 1151 Programmable Calculator shown here, TI supplied three MSI arrays plus 153 DTL and TTL ICs, as well as numerous discrete components (silicon diodes, small signal transistors and power transistors). File Info : application/pdf, 3 Pages, 2.53MB Document Document TI TTL Trends Friden 1151 Calculator Brochure
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