1.Software development begins at the system level and progresses through ( ) , design , coding , testing , and maintenance .
2.The popular output devices used for personal computer are ( ).
3.Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true? （ ）
4.Memory holds data and instructions while they are ( ) by the CPU.
5.In order to store huge amounts of information, we need ( ).
6.（ ）language is similar to machine language.
7.Input and output devices refer to ( ).
8.Primary memory which is stored on chips located ( ).
9.The maximum number of data that can be expressed by 8 bits is （ ） .
10.When a computer is turned on, a series of instructions stored in ROM called the ( ) issue the commands to load the operating system into main memory.
11.（ ）：A location where data can be temporarily stored.
12.A floating constant consists of an integer part, a decimal point, a fraction part, an e or E, and an optionally signed integer （ ） .
13.The personal computer or （ ）is the smallest general-purpose computer.
14.In the second generation of computers, ( ) replaced vacuum tubes.
15.（ ） controls the operation of the computer and performs it＇s data processing functions.
16.The computer system hardware is composed of ( ).
17.A stack protocol can be used for ( ).
18.The set {120,-12,0.12,1.2} might be considered as ( ).
19.The basic unit of measure in a computer system is the （ ）. It is the smallest unit in computing. There are some other measures in a computer, such as Kilobyte, Megabyte, Gigabyte and so on.
20.The 8086 can access up to ( ) bytes of memory and up to ( ) input or output ports.
多选题:7道,每道2分,总分14多选题:7道,每道2分,总分14
1.A processor is composed of ( ).
2.FORTRAN distinguishes between two types fo numeric data:( ) and ( ).
3.The 8086 has four sets of registers. They are general registers, ( ),( )and ( ).
4.8086 CPU executes a instruction includes the steps:( )
5.A selection structure begins with the IF …THEN statement, and terminates with the ( ) statement. In the middle of the structure is ( ).