Introduction to Computers Worksheet #1

Name ______

1. The number of households with at least one computer is currently estimated at ______%.

2. Engineers from IBM and Howard Aiken of Harvard University developed a machine that could

add, subtract, ______, and ______using punched cards. This

machine was ______long and ______high.

3. By the late 1980’s, computers were rated in ______. Today’s

supercomputers can handle over ______instructions per second.

4. A computer is an electronic device that can perform ______

______

______.

5. A ______is a detailed set of computer instructions installed

in the computer that tells the computer what to do.

6. The difference between system program software and application program software is

______

______.

7. The type of computers that we have here at school and most of us have at home is a

______.

8. The fastest type of computer is called a ______.

9. A mainframe is a computer that is less powerful and less expensive than supercomputers, but

______

______.

10. A byte is equal to ______bits.

11. Explain the difference between RAM and ROM.

______

______.

Matching

___ 1. Hardware A. Used to transport data into the computer ___ 2. Software B. Allows user to see or hear the information ___ 3. Input Device C. A device that can read text or illustrations ___ 4. Keyboard and transmit then to a digitized format ___ 5. Scanner D. It tells the computer what to do ___ 6. Digital Camera E. Devices that amplify sound ___ 7. Video Input Camcorder F. Captures images into memory storage ___ 8. CPU G. Prints text or graphics onto paper ___ 9. Output Device H. The physical parts of a computer ___ 10. Printer I. The “brain” of the computer ___ 11. Monitor J. Allows user to view computer information ___ 12. Speaker K. Contains typewriter-like & specialty keys for entering data L. Can record live audio and video that can be transferred to a computer

Matching

___ 1. Hard Drive A. Can store the equivalent of 500 floppy disks ___ 2. Storage Device B. Hold as much information as 80 floppy disks ___ 3. Floppy Disk C. Allows instructions and data to be saved ___ 4. Zip Disks D. A standard magnetic tape resembling a ___ 5. Thumb Drives basic audio cassette ___ 6. Compact Discs E. bendable, oxide-coated, magnetic plastic ___ 7. Digital Audio Tape devices to use in a disk drive F. An internal storage device G. Can fit in pocket or on a keychain (storage capacity exceeds 4 Gigabytes)