Chapter 02: a closer Look at Hardware and Software true/false
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| Chapter 02: A Closer Look at Hardware and Software
TRUE/FALSE 1. Virtually all computers today—such as embedded computers, mobile devices, microcomputers, midrange servers, mainframes, and supercomputers—are digital computers. ANS: T PTS: 1 REF: 47 2. A bit is the smallest unit of data a digital computer can recognize and is always represented by a 1. ANS: F PTS: 1 REF: 48 3. Unicode is limited to only the Latin alphabet used with the English language. ANS: F PTS: 1 REF: 49 4. Most mice today are mechanical mice and have a ball exposed on the bottom surface of the mouse to control the pointer movement. ANS: F PTS: 1 REF: 50 5. Touch screens are used in consumer kiosk and other point-of-sale (POS) systems, and they are useful for on-the-job applications where it might be impractical to use a keyboard or mouse. ANS: T PTS: 1 REF: 52 
6. The kind of input device shown in the accompanying figure is popular but is seldom used by individuals to input photographs and other personal documents into a computer. ANS: F PTS: 1 REF: 53 7. A digital camera is usually designated either as a still camera or a video camera. ANS: T PTS: 1 REF: 55 8. You do not need to have the mobile deposit application on your mobile phone in order to make a remote deposit via your mobile phone. ANS: F PTS: 1 REF: 56 9. Digital camcorders are similar to conventional analog camcorders, but they store images on digital media. ANS: T PTS: 1 REF: 56 
10. RAM connects all components of the computer system and is the PC’s main circuit board shown in the accompanying figure. ANS: F PTS: 1 REF: 57 11. CPU manufacturers are focusing on single-core CPUs as a way to increase the amount of processing that a CPU (like the one in the accompanying figure) can do in a given time period. ANS: F PTS: 1 REF: 59 12. Registers are used by a CPU like the one in the accompanying figure to temporarily store data and intermediary results during processing. ANS: T PTS: 1 REF: 61 13. A higher CPU clock speed means that more instructions can be processed per second than the same CPU with a lower CPU clock speed. ANS: T PTS: 1 REF: 59 14. Data in RAM is kept when the program using that data is closed. ANS: F PTS: 1 REF: 60 15. Display devices today are typically color displays, which form colors by mixing combinations of four colors—red, green, blue, and white. ANS: F PTS: 1 REF: 63 16. Laser printers print one entire page at a time. ANS: T PTS: 1 REF: 63 17. Storage systems are RAM, which is volatile and holds data only temporarily. ANS: F PTS: 1 REF: 65 18. Flash memory storage systems represent data using electrons. ANS: T PTS: 1 REF: 66 19. For security purposes, both internal and external hard drives today are increasingly coming with built-in encryption that automatically encrypts all data stored on the hard drive and protects access to the hard drive with a secure password. ANS: T PTS: 1 REF: 67 20. Hybrid hard drives include both flash memory and a magnetic hard drive. ANS: T PTS: 1 REF: 68 |