Assembly language (Wang Shuang Third Edition) Chapter I: basic knowledge

Checkpoint 1.1:

(1)1The addressing capacity of a CPU is 8KB, so the width of its address bus is13position

Because 8KB=8*1024B=2^13

 

(2)1KBThe memory has1024The number of storage units and the number of storage units.0reach1023

1KB=1024B,Numbering from 2^0 to 2^10-1

 

(3)1KB=1024B=1024*8bit

 

(4)1KB=2^10B  1MB=2^20B  1GB=2^30B

 

(5)8080,8088,80286,80386The width of the address bus is 16, 20, 24, and 32, and the data they can transmit at one time are:64KB,1MB,16MB,4GB

If a CPU has N address lines, you can say that the width of the CPU address bus is N, and you can find 2 ^ N memory units.

 

(6)8080,8088,8086,80286,80386Data bus width bits 8, 8, 16, 16, 32, then they can transmit data at one time:1B,1B,2B,2B,4B

8The root data bus can transmit 8 bit binary at a time, that is, one byte.

 

(7)Read 1024 bytes of data from memory. 8086 read at least.512Second, 80386 at least read.256second

8086One can transmit 2B, 80386 can transmit 4B at a time.

 

(8)In memory, data and programs areBinaryForm storage

 

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