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complete board: MOS's developer kit for the 6502, widely used in a number of projects: Motorola MEK6800D2: Motorola 6800: 1976: complete board: MPT8080 Microtutor: Intel 8080: 1977: complete board: A trainer type single-board-computer. As recently as 2008, it remained in academic use. [6] As of 2011, the MPT8080 was still available for sale ...
This is a list of transistorized computers, which were digital computers that used discrete transistors as their primary logic elements. Discrete transistors were a feature of logic design for computers from about 1960, when reliable transistors became economically available, until monolithic integrated circuits displaced them in the 1970s.
The 2N170 was priced slightly higher than the 2N107. The 2N170 was a fallout from the 2N167, 2N168 and 2N169 transistor lines. In the 1950s, General Electric distinguished their PNP and NPN transistors by their case styles. PNP transistors had the round, black "top hat" style body, while NPN transistors had oval, black "top hats".
The Philco computer name "Transac" stands for Transistor-Automatic-Computer. Both of these Philco computer models used the surface-barrier transistor in their circuitry designs, the world's first high-frequency transistor suitable for high-speed computers. [14] [15] [16] The surface-barrier transistor was developed by Philco in 1953. [17]
The first transistor hi-fi system was developed by engineers at GE and demonstrated at the University of Philadelphia in 1955. [9] In terms of commercial production, The Fisher TR-1 was the first "all transistor" preamplifier, which became available mid-1956. [10] In 1961, a company named Transis-tronics released a solid-state amplifier, the ...
SOT: Small-outline transistor (also SOT-23, SOT-223, SOT-323). TO-XX: wide range of small pin count packages often used for discrete parts like transistors or diodes. TO-3: Panel-mount with leads; TO-5: Metal can package with radial leads; TO-18: Metal can package with radial leads; TO-39; TO-46; TO-66: Similar shape to the TO-3 but smaller
BC558, general purpose PNP transistor; 2N3904, general purpose NPN transistor; 2N3906, general purpose PNP transistor; 2N7000, N-channel FET; BS170, N-channel FET, similar to 2N7000; PN2222A, a "plastic" version of the original 2N2222 NPN transistor which came in a TO-18 package; Other common components: MK484, AM radio integrated circuit
The whole is encapsulated to form a 0.5 inches (13 mm) square module. Up to 36 modules are mounted on each card, though a few card types had just discrete components and no modules. Cards plug into boards which are connected to form gates which form frames. [3]: 15 SLT voltage levels, logic low to logic high, varied by circuit speed: [3]: 16
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