例如要计算1+2和3+4,数据是1,2,3,4,基本操作是+,从内存输入以上内容到控制单元(CONTROL UNIT),也就是程序计数器,它按输入顺序接收基本操作与数据,并传给算数逻辑单元(ARITHMETIC LOGIC UNIT)做基本运算,将其结果输出到内存中。 STORED PROGRAM COMPUTER存储程序计算机 sequence ofinstructions storedinside computer...
multiplication,subtraction,division.If you want to plot something,you can't.If you want to go on the internet,send email with it,you can't.Itcan only do this one thing.And if you want to create a machine that did another thing,then you'd have to create another fixed-program computer ...
If one wanted to define what a computer is, then the following would probably fill the bill: a high-speed, automatic, electronic, digital, general purpose, stored program data processing machine. It is not the purpose of this book to cover every aspect of this definition. In fact, the ...
1. What is computer software?Anything that can be stored electronically is software.The storage devices and display devices are hardware.The terms software and hardware are used as both nouns and adjectives.For example,you can say:”The problem lies in the software,”meaning that there is a ...
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Stored procedures can access or modify data in adatabase, but it is not tied to a specific database or object, which offers a number of advantages. Benefits of using stored procedures A stored procedure provides an important layer of security between theuser interfaceand the database. It supp...
aHowever, a few students are against such things. In their opinion, rather than trying to learn knowledge,most of the internet goers are playing computer games on it,which is a waste of time and money.Some students they even drop off from classes to go to internet bars.So they argue th...
What is a program counter (PC)? The program counter, also known as the instruction pointer or simply PC, is a fundamental component of a computer's central processing unit (CPU). It is a special register that keeps track of the memory address of the next instruction to be executed in a...
Lesson1WhatIsaComputer?Sincethetechnologyisdevelopingrapidlynowadays,nearlyallpeoplearefamiliarwithcomputers.Ithasbecomeanessentialpartofhumanlife.Everyoneiskeenonit.Nowlet’sseewhatacomputeris.4 Lesson1WhatIsaComputer?Itcanstoreandprocessdataandproduceoutputresultsunderthedirectionofastoredprogramofinstructionsinavery...
Princeton mathematician John Von Neumann conceived the architecture for the stored-program computer -- the idea that a computer's program and the data it processes can be kept in the computer's memory. Warren McCulloch and Walter Pitts proposed a mathematical model of artificial neurons, laying ...