review questions #'s 1-25

1. 1/1,000,000
2. computers are considered to be extreamely accurate devices because computers have proven so accurate they are trusted in virtually every application, even those involving life-and-death situations.
3. the factors that have contributed to the modern computers increased durability and reliability because they can operate error-free over a long period of time,and they have become more reliable and durable with technical enchancements.
4. the general-purpose computer is that because of technologic advancements in the computer industry, most computers today are considered general-purpose computers.
5. they're called cost-effective because they were expensive and were huge.
6. computers have participated in their own developement by the sizes decreasing, computer speed, capacity, reliability, durability, and accuracy, versatilety, and capability have increased.
8. input:facts are recieved and sent to the processor. processing: the facts are manipulated to produce results. output: the results are communicated or stored. input: weekly hours worked 40. processing: weekly hours worked times hourly rate 4*$9.75=$390.00. output: the employee gross pay for the week is $390.00.
9. the process of storing the processed information for later recal or of communicating it to user immediately.
10. the difference between computer hardware and software is that you can touch computer hardware. and computer software you can't touch because it is inside the computer.
11. input device- a hardware that enables the computer to accept data. processor- a hard ware device that processes the data into meaningful information. storage device- a hardware device that permits data storage. output device- a hardware device that reports the information in a form we can understand.
12. the difference between a sytem program and application program is a system program controls the computer's circuitry and hardware devicesj, while an application device instructs the computer to perform a specific, userdefined task.
13. a computer system works is made up of hardware and software working together to accomplish a common goal.
14. as a computer technology grew, smaller, less powerful computers, called mini computers. the microprocessor led to the creation of yetanother category of computers, which were evensmaller and less powerful than the minicomputer and were called the microcomputer.
15. personal computer is a small,desk size microcomputer designed for and used primarily in small and large buisinesses. potable computers are lightweighted and transportable.
17. information utility service use large computers that store huge amounts of information about many different subjects.
18. computers can provide better service for bank customers by getting a customer cards that permit them to use other banks' tellermachines nation wide.
19. computers may be used at home by going on the internet to chat with friends, looking up information for a project, business, typing up home work and much more.
20. some ways that computers are used in dealing with the weather and envirement are temperature ranges, precipitation levels, adn wind flow.
21. computers have affected transportation like rapid-transit trains operate with no crew memebers. many aircraft can fly to their destinations and land under the control of a computer, making the flight safer and more efficient; in this situation, the captian simply serves as a manager by telling the computer what to do.
22. computerized mapping systems can quickly point out the location of a problem and identify the emergency crew closest to the scene.
23. computers have long been used by hospital for routine record-keeping. today, however, many people owe their lives to the computer.
24. when a computer is put to work doing routine, boring tasks, the employees who previously performed these tasks can be freed to do more interesting work. office jobs that require the same calculations to be repeated frequently and assembly line work that requires the same recurring tasks to be performed are examples of situations in which the computer can be put to good use.