Unit three eⅹtA A Look at tomorrow
Unit Three Text A A Look at Tomorrow
TextA A Look at Tomorrow e Text-related information Pre-reading tasks Detailed study of the text e Outline and summary ● Home assignment
Text A A Look at Tomorrow Text-related information Pre-reading tasks Detailed study of the text Outline and summary Home assignment
Text-related information e1. Digital computer: Two main types of computers are in use today, analog and digital, but the term computer is often used to mean only the digital type Digital computers solve problems by performing sums and by dealing with each number digit by digit A digital computer is not actually a single machine, in the sense that most people think of computers Instead, it is a system composed of five distinct elements:(1)a central processing unit;(2 )input devices;(3)memory storage devices;(4) output devices; and(5)a communications network, called a bus that links all the elements of the system and connects the system to the external world
Text-related Information 1. Digital computer: Two main types of computers are in use today, analog and digital, but the term computer is often used to mean only the digital type. Digital computers solve problems by performing sums and by dealing with each number digit by digit. A digital computer is not actually a single machine, in the sense that most people think of computers. Instead, it is a system composed of five distinct elements: (1) a central processing unit; (2) input devices; (3) memory storage devices; (4) output devices; and (5) a communications network, called a "bus," that links all the elements of the system and connects the system to the external world
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2. IBM: IBM(International Business Machines) is the largest computer manufacturer. BM made office equipment long before the 1950s when it started making computers. In 1981/IBM introduced the IBM/ PC which quickly became one of the most popular microcomputers. Now many other companies produce software or peripherals designed to be used with the IBM PC, and several companies produce computers designed to run the same programs as the IBM PC.IBM大中华地区董 The headquarters of BM is in Armonk,事长兼首席执行总 New york 裁周伟焜
2. IBM: IBM (International Business Machines) is the largest computer manufacturer. IBM made office equipment long before the 1950s, when it started making computers. In 1981 IBM introduced the IBM PC, which quickly became one of the most popular microcomputers. Now many other companies produce software or peripherals designed to be used with the IBM PC, and several companies produce computers designed to run the same programs as the IBM PC. The headquarters of IBM is in Armonk, New York. IBM大中华地区董 事长兼首席执行总 裁 周伟焜