复旦大学：《计算机原理 Computer System》习题PPT课件_chapter2

Chapter 2 Guobao Jiang 11210240049@fudan.edu.cn

Chapter 2 Guobao Jiang 11210240049@fudan.edu.cn

Outline 2.1 Information Storage 2.2 Integer representations 2. 3 Integer Arithmetic 2.4 Floating Point 2.5 Summary

Outline • 2.1 Information Storage • 2.2 Integer Representations • 2.3 Integer Arithmetic • 2.4 Floating Point • 2.5 Summary 2

2.1 Information Storage Problem 2. 1(P29) A. Ox8F7A93 to binary 3 8 a 9 10001101101001011 D. Binary110101101101111100110to hexadecimal 001101010101101110100110 35 B 6

2.1 Information Storage • Problem 2.1 (P29) • A. 0x8F7A93 to binary3 8 F 7 A 9 3 1000 1111 0111 1010 1001 0011 • D. Binary 1101011011011111100110 to hexadecimal 0011 0101 1011 0111 1110 0110 3 5 B 7 E 6 3

Boolean algebras and rings Ring(Integer ring, Modular arithmetic Boolean algebra Note: the operations are different

Boolean Algebras and Rings • Ring (Integer ring, Modular arithmetic) • • Boolean algebra • • Note :the operations are different! 5

Logical Operations and Bit-level Operations p49 O: 1) nonzero argument as true, o as false 2) logical operators do not evaluate their second argument if what?

Logical Operations and Bit-level Operations P49 • LO: • 1) nonzero argument as TRUE, 0 as FALSE • 2) logical operators do not evaluate their second argument if what? 6