文档介绍：现代科技英语教程 Unit 5 Text A Exercises 《教程》 EX: VI, 《教程》 EX: VIII, P. 8 1-82 《教程》 EX: IX, 《教程》 EX: X, P. 83 《教程》 EX: IV, 《教程》 EX: V, P80-prehension Vocabulary Translation 上一页下一页 I. Mark the following statements with T (true) or F (false) according to the passage ( ) 1. ponents puter hardware are connected to CPU through wires or circuitry called a “ bus ”. ( ) 2. An optical scanner uses touch-sensitive equipment to convert images such as a picture or text into electronic signals that can be manipulated by puter. ( ) 3. The function of both Dot-matrix printers and Laser printers is to take text and image from puter and print them on paper. ( ) 4. Random access memory ( RAM ) is used to store the information and instructions permanently that operate puter's programs. ( ) 5. Floppy disks store much more information than a hard disk drive and retrieve the information at a much faster rate. 上一页下一页 TTTF 现代科技英语教程 Unit 4 Text A Exercises F II. Give brief answers to the following questions 1. What is the function of ponents puter hardware typically divided into? 2. What devices puter input hardware consist of? 3. Why is Random access memory ( RAM ) known as volatile memory? 4. Why is flash memory now very popular in portable devices? 5. What ’ s the main difference between input hardware and output hardware in function? 1. The function puter ponents is typically divided into three main categories: input, output, and storage. 2. They are: a light pen , a mouse , a joystick , a keyboard , touch-screen displays, an optical scanner , a microphone , a voice recognition module, a modem , work interface card (NIC). 3. RAM is also known as volatile memory because the information within puter chips is lost when power to puter is turned off. 4. Flash memory is now very popular in portable devices with its high capacity, fast read/write speed, portability, convenient application and ic shock resistance, etc. 5. Input hardware