数字设计原理与实践第四版第一二章答案.doc
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Chapter 1
1.2
(1)A unit which describes a single digit of binary notation was represented either by ’0’ or ‘1’;
(2)A unit which describes the digital abstraction that
associate a range of analog values with each logic value(0 or 1);
(3)A unit which describes a state false or true with logic value
0 or 1 ;
1.3
ASIC: Application Specific Integrated Circuit
CAD: Computer Aided Design
CD: Compact Disc
DVD: Digital Versatile Disc
CPLD: Complex Programmable Logic Device
FPGA: Field- Programmable Gate-Array
HDL: Hardware Description Language
IC: Integrated Circuit
IP: Internet Protocol
LSI: Large Scale Integration
MCM: Multi-chip Module
MSI: Medium Scale Integration
NRE: Non Recurring Engineering
PBX: Private Branch Exchange
PCB: Printed Circuit Board
PLD: Programmable Logic Device
PWB: Printed Writing Board
SMT: Surface Mount Technology
SSI: Small Scale Integration
VHDL: Very High Speed Integration Circuit Hardware Description Language
VLSI: Very Large Scale Integration
1.5
Tape recorder to mp3、TV、Camera、video camera
Chapter 2
2.1
(a) 6B16 (d ) 110111.0101002 (e) 14.D16 (i) 57.348 (j)
1010 1110 0.001112
2.2 (f) 4ACE.F0C16
2.3 (f) 157255.5756748
2.4 321076543218= 11010001 00011111 01011000
110100012 =3218 0378 1308 3218
2.5 (g) 13810
2.6 11111012
2.7 (a) 1001101 (c) 101000000
2.11
2.12
(a) no (b) no (c) yes (d) yes
2.22
(1) if (X>=0&&Y>=0) (2) if( X>=0&&Y>=0&&|X|>=|Y|)
[X]+[Y]=X+Y=[X+Y]
[X]+[Y]=X+2n-|Y|=X+Y=[X+Y]
(3) if(X>=0&&Y<=0&&|X|<=|Y|) (4) if(X<0&&Y<0)
[X]+[Y]=X+2n-|Y|=2n-|X+Y|=[X+Y] [X]+[Y]= 2n-|X|+2n-|Y|=2n -|X+Y|=[X+Y]
2.35
001/010 011/100 101/110 111/000
2.36
The half of the boundaries which is bad boundaries is 2n-1