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XI
15.3.2 Teorema di De Morgan..................................................................................................................485
15.3.3 Implementazione circuitale in CMOS......................................................................................485
15.3.4 Porte di tipo tri-state......................................................................................................................487
15.4 Reti combinatorie.............................................................................................................................................488
15.4.1 SoP........................................................................................................................................................489
15.4.2 PoS........................................................................................................................................................489
15.4.3 Minimizzazione mediante mappe di Karnaugh...................................................................490
15.4.4 Realizzazione mediante multiplexer e decoder...................................................................493
15.5 Reti sequenziali..................................................................................................................................................493
15.5.1 Macchine di Mealy e di Moore....................................................................................................494
15.5.2 Macchine sincrone ed asincrone...............................................................................................495
15.6 Latch e registri....................................................................................................................................................497
15.6.1 Latch.....................................................................................................................................................497
15.7 Esercizi..................................................................................................................................................................502
Capitolo 16
Componenti digitali
16.1 Logiche ASIC.......................................................................................................................................................521
16.1.1 Logiche full custom........................................................................................................................521
16.1.2 Logiche semi custom.....................................................................................................................522
16.1.3 Logiche programmabili.................................................................................................................522
16.2 Nomenclatura dei circuiti integrati ...........................................................................................................525
16.3 Componenti combinatori..............................................................................................................................526
16.3.1 Codificatori........................................................................................................................................526
16.3.2 Data-Sheet: 4532B, 8-input priority-encoder........................................................................527
16.3.3 Decodificatori...................................................................................................................................531
16.3.4 Data-Sheet: 4543B, BCD-to-7-segment decoder/driver....................................................532
16.4 Comparatori........................................................................................................................................................533
16.4.1 Data-Sheet: 4585B, 4-bit magnitude comparator...............................................................534
16.5 Generatori e rivelatori di parità....................................................................................................................535
16.5.1 Data-Sheet: 4531B, 13-input parity checker/generator....................................................535
16.6 Sommatori ..........................................................................................................................................................536
16.6.1 Data-Sheet: 4008B, 4-bit binary full-adder.............................................................................537
16.7 ALU.........................................................................................................................................................................537
16.7.1 Data-Sheet: MM54HC181, ALU...................................................................................................538
16.8 Multiplexers e demultiplexers......................................................................................................................539
16.8.1 Multiplexers (mux)..........................................................................................................................539
16.8.2 Data-Sheet: 4512B, 8-input MUX with tri-state output.....................................................542
16.8.3 Demultiplexers (demux)...............................................................................................................542
16.8.4 Data-Sheet: 4514B, 1-of-16 decoder/demux with latches...............................................544
16.9 Implementare funzioni con mux e decoder............................................................................................545
16.9.1 Mediante multiplexer....................................................................................................................545
16.9.2 Mediante decodificatore..............................................................................................................547
16.10 Componenti sequenziali................................................................................................................................548
16.10.1 Latch e Flip-Flop..............................................................................................................................548
16.10.2 Data-Sheet: HEF4013B...................................................................................................................550
16.10.3 Shift registers....................................................................................................................................551
16.10.4 Data-Sheet: HEF40195B................................................................................................................558
16.10.5 Contatori.............................................................................................................................................558
16.10.6 Data-Sheet: HEF40192...................................................................................................................562
16.11 Esercizi..................................................................................................................................................................563