数字设计原理与实践第四版第一二章答案.doc

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