Basic Logic Circuit Design
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- 2010.11.03
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연세대학교 전기전자기초실험 7차 예비레포트
목차
① Explain how to design logic gates with transistors.
② Design XOR gate with 2 input AND, OR, NAND, NOR, NOT gates.
③ Describe the followings
1) TTL(Transistor Transistor Logic)
2) ECL(Emitter Coupled Logic)
3) MOS(Metal Oxide Semiconductor)
4) CMOS(Complementary Metal Oxide Semiconductor)
④ Using Karnaugh map, express boolean algebra equation from T/F table.
1) Half adder
2) Full adder
⑤ Build boolean algebra equation of full/half adder.
1) Full adder
2) Half adder
본문내용
4) CMOS(Complementary Metal Oxide Semiconductor)
→ Complementary metal-oxide-semiconductor (CMOS) is a technology for constructing integrated circuits. CMOS technology is used in microprocessors, microcontrollers, static RAM, and other digital logic circuits. CMOS technology is also used for several analog circuits such as image sensors, data converters, and highly integrated transceivers for many types of communication. The typical digital design style with CMOS uses complementary and symmetrical pairs of p-type and n-type metal oxide semiconductor field effect transistors (MOSFETs) for logic functions. Two important characteristics of CMOS devices are high noise immunity and low static power consumption. Significant power is only drawn while the transistors in the CMOS device are switching between on and off states. Consequently, CMOS devices do not produce as much waste heat as other forms of logic, for example transistor-transistor logic (TTL) or NMOS logic, which uses all n-channel devices without p-channel devices. CMOS also allows a high density of logic functions on a chip. It was primarily this reason why CMOS won the race in the eighties and became the most used technology to be implemented in VLSI chips.
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