Embedded Systems and Computer Architecture by G.R. Wilson (Auth.) PDF

By G.R. Wilson (Auth.)

ISBN-10: 0750650648

ISBN-13: 9780750650649

Content material:
Preface

, Pages xi-xii
Notation utilized in the text

, Page xiii
1 - Binary numbers

, Pages 3-11
2 - good judgment expressions

, Pages 12-32
3 - digital common sense circuits

, Pages 33-51
4 - computing device arithmetic

, Pages 52-67
5 - computing device design

, Pages 71-85
6 - guide set and code assembly

, Pages 86-99
7 - software structures

, Pages 100-124
8 - basic computing device circuits

, Pages 125-137
9 - enter and output ports

, Pages 138-147
10 - enter and output methods

, Pages 148-171
11 - extra devices

, Pages 172-184
12 - Assembler and linker tools

, Pages 185-195
13 - The regulate unit

, Pages 196-211
14 - better computers

, Pages 215-224
15 - Cache memory

, Pages 225-234
16 - reminiscence management

, Pages 235-244
Appendix A - G80 guide set

, Pages 245-260
Appendix B - ASCII personality codes

, Page 261
Appendix C - the enter and output devices

, Pages 262-283
Appendix D - The GDS assembler and linker

, Pages 284-290
Index

, Pages 291-294

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Extra info for Embedded Systems and Computer Architecture

Sample text

The 1-bit adder is traditionally called a full adder. We can easily design the circuit of the full adder using the truth-table method from Chapter 2. 3. After simplification we obtain the expressions for the logic of the full adder: Ci | Ai Ti Ci Ci+l Si 0 0 0 0 0 0 0 1 0 1 0 1 0 0 1 0 1 1 1 0 1 0 0 0 1 1 0 1 1 0 1 1 0 1 0 1 1 1 1 1 S i - - / C i . / A i . /Ti -k- C i . A i . T i Ci+l -- A i . T i + A i . 2 results in the required 4bit adder. This adder has a width of 4 bits; it can readily be extended to produce an adder of any width.

B . /A. = / C . B. B + / B . / A + / C . / B = / C . /A. B + / B . / A + / C . / B = / B . B. /A + / C . / B + / B . A (ii) Y = / B . B where the functions are defined by the following truth table. A. B. 19 Solve Problem 12 using the Quine-McCluskey method. 20 Solve Problem 13 using the Quine-McCluskey method. 21 Solve Problem 14 using the Quine-McCluskey method. 22 Solve Problem 15 using the Quine-McCluskey method. 23 Solve Problem 16 using the Quine-McCluskey method. 24 Solve Problem 17 using the Quine-McCluskey method.

Theoretically, these expressions allow us to design a logic circuit to produce all the carry signals at the same time using two layers of gates. Unfortunately, the expressions become extremely long; give a thought to how the expression for C31 would look! We do not pursue this possible solution any further because the number of gates becomes extremely large. Our second attempt at a solution will result in a practical fast adder. The so-called carry-look-ahead 3 ALU generates all the carry signals at the same time, although not as quickly as our first attempt would have done.

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Embedded Systems and Computer Architecture by G.R. Wilson (Auth.)


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