Title Digital Logic Design-NCG-2022.pdf ✅

Digital Logic Design

AC, DC, Open and Closed Circuits, Series and Parallel, Basic Components Closed Open Series and Parallel
• History of Integrated Circuits • Invention of transistors • Invention of IC • 1961-1965 in SSI (small scale integration) transistors were fabricated about 10 to 100 on a single chip. This technology is used for making logic gates, flip flops. • 1966-1970 in MSI (medium scale integration) transistors were fabricated about 100 to 1000 on a single chip. This technology is used for making counters, multiplexers, decoders. • In 1971-1979 in LSI (large scale integration) transistors were fabricated about 1000 to 20000 on a single chip. This technology is used for making microprocessor, RAM, ROM • In 1980-1984 in VLSI (very large scale integration) transistors were fabricated about 20000 to 50000 on a single chip. This technology is used for making DSP (digital signal processing) IC’s, RISC microprocessor, 16-bit and 32-bit microprocessors. • From 1985- present technology is ULSI (ultra large scale integration), in which transistors are fabricated about greater than 50000 to billions on a single chip. This technology is used for making 64-bit microprocessors. Vacuum Diode