Computer Essentials 7

Images displayed on monitors need to have a refresh rate of at least _____, otherwise they flicker causing eye strain. Select one: a. 50 hertz b. 75 hertz c. 100 hertz d. 120 hertz

75 hertz

_____-input devices convert sounds into a form that can be processed by the system unit. Select one: a. Electrolyzing b. Plotting c. WebCam d. Audio

Audio

OMR, OCR, and MICR are all types of Select one: a. Radio Frequency Card Readers (RFID) b. magnetic card readers c. bar code readers d. character and mark recognition devices

Character and mark recognition devices

Used commonly for classroom presentations, _____ connect to microcomputers to give output similar to a monitor. Select one: a. scanners b. HDTV c. e-books d. data projectors

Data projectors

This indicates the distance between each pixel. Select one: a. Dot pitch b. Refresh rate c. Resolution d. Word size

Dot pitch

Which of the following printer features enables you to print on both sides of a sheet of paper? Select one: a. Simplex b. Duplex c. Resolution d. Dual Matrix

Duplex

If your wrist is getting strained from repetitive typing, it is advisable to use a(n) Select one: a. ergonomic keyboard b. wireless keyboard c. traditional keyboard d. flexible keyboard

Ergonomic keyboard

These are the most widely used type of monitor today. Select one: a. Flat-panel monitors b. CRT monitors c. Projector monitors d. E-book readers

Flat-panel monitors

What kind of specialized monitor is especially useful for graphic artists, designers and publishers? Select one: a. Flat-panel monitor b. CRT monitor c. High-definition television (HDTV) d. e-books

High-definition television (HDTV)

_____ is any data or instructions sent to the computer. Select one: a. Digital b. Output c. Information d. Input

Input

Which of the following is not a type of scanning device? Select one: a. Optical scanner b. Bar code reader c. Light pen d. Character and mark recognition device

Light pen

This reading device is readily used in banks to read the numbers on the bottom of checks and deposit slips. Select one: a. MICR b. OCR c. OMR d. UPC

MICR

The most widely used audio-input device is the Select one: a. WebCam b. radio frequency card reader c. microphone d. stylus

Microphone

Which of the following types of character recognition systems is used for standardized multiple-choice testing? Select one: a. UPC b. MICR c. OMR d. OCR

OMR

This type of mouse is currently the most widely used. Select one: a. Mechanical b. Cordless c. Wireless d. Optical

Optical

Two categories of laser printers are Select one: a. thermal and personal b. personal and shared c. ink-jet and high-definition d. active-matrix and passive matrix

Personal and shared

Bar code readers use _______ embedded in them to read bar codes. Select one: a. coprocessors b. magnetic cells c. RFID microchip d. photoelectric cells

Photoelectric cells

The individual dots that form the image on a monitor are called Select one: a. picas b. bits c. pixels d. bytes

Pixels

Which of the following statements is incorrect? Select one: a. Printer resolution is measured in dpi (dots per inch). b. Printer output is often called hard copy. c. Memory within a printer is used to store printing instructions and documents waiting to be printed. d. Printer speed is measured in the number of words printed per minute.

Printer speed is measured in the number of words printed per minute

Tablet PCs and PDAs use a Select one: a. joy stick b. light pen c. stylus d. mouse

Stylus

A keyboard key, like Caps Lock, that turns a feature on or off is called a _____ key. Select one: a. power b. toggle c. function d. combination

Toggle

Instead of using a mouse, you can use this pointing device to control the pointer by rotating a ball with your thumb. Select one: a. Pointing stick b. Touchpad c. Joystick d. Trackball

Trackball

This type of keyboard uses a touch screen as the input device. Select one: a. PDA keyboard b. Wireless keyboard c. Traditional keyboard d. Virtual keyboard

Virtual keyboard

Which of the following allows the transmission of telephone calls over computer networks? Select one: a. Faxing b. Cell phones c. PDAs d. Voice over IP

Voice over IP

The arrangement of keys on a keyboard, QWERTY reflects the keyboard layout by: Select one: a. representing the phonetics of the alphabets most closely associated with the keyboard. b. taking the letters of the first six alphabetic characters found on the top row of keys. c. using the alphabetic characters most frequently used on the keyboard. d. using the letters of the alphabetic characters that are closest to access while typing.

taking the letters of the first six alphabetic characters found on the top row of keys