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Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 2 Logic Gates InverterInverter AND GateAND Gate OR GateOR Gate Exclusive-OR GateExclusive-OR Gate NAND GateNAND Gate NOR GateNOR Gate Exclusive-NOR GateExclusive-NOR Gate

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 4 The Inverter Boolean expressionTruth table 0 = LOW 1 = HIGH Pulsed waveforms The output of an inverter is always the complement (opposite) of the input.

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 6 The AND Gate The AND Gate Boolean expression Truth table 0 = LOW 1 = HIGH Pulsed waveforms The output of an AND gate is HIGH only when all inputs are HIGH.

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 9 The OR Gate Boolean expression Truth table 0 = LOW 1 = HIGH The output of an OR gate is HIGH whenever one or more inputs are HIGH Pulsed waveforms

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 12 The NAND Gate Boolean expression Truth table 0 = LOW 1 = HIGH The output of a NAND gate is HIGH whenever one or more inputs are LOW. Pulsed waveforms

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 15 The NOR Gate Boolean expression Truth table 0 = LOW 1 = HIGH The output of a NOR gate is LOW whenever one or more inputs are HIGH. Pulsed waveforms

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 18 Exclusive-OR Gate Boolean expression Truth table 0 = LOW 1 = HIGH The output of an XOR gate is HIGH whenever the two inputs are different. Pulsed waveforms

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 19 Exclusive-NOR Gate Boolean expression Truth table 0 = LOW 1 = HIGH The output of an XNOR gate is HIGH whenever the two inputs are identical. Pulsed waveforms

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 23 Programmable Logic Programmable link technology Fuse technologyFuse technology Anti-fuse technologyAnti-fuse technology EPROM technologyEPROM technology EEPROM technologyEEPROM technology SRAM technologySRAM technology

Floyd Digital Fundamentals, 9/e Copyright ©2006 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Slide 25 Programmable Logic In-system programming (ISP)In-system programming (ISP) –Joint Test Action Group (JTAG) –Imbedded processor