A CPU clock rate is measured in:

• GHz

• Inch

• Hz

• 1/sec

• dpi

Choose peripheral devices.

• Keyboard

• Monitor

• Scanner

• Microphone

  Speaker

• System unit

Researchers in the field of HCI both

• observe the ways in which humans interact with software

• design technologies that let humans interact with computers in novel ways

• correcting technologies that let humans interact with computers in novel ways

• observe the ways in which humans interact with firmware

• observe the ways in which humans interact with hardware

Choose output devices.

• Plotter

• Microphone

• Speaker

• Scanner

Shortcut is

• 1.  a buffer that some operating systems provide for short-term storage and transfer within and between applications programs

  Are a of memory

• voice recognition

• 1.  a shortcut is a special type of file in some operating systems that points to another file or device

Choose the appropriate wireless media 

• Radio Frequency (RF)
• Bluetooth
• Infrared (IR)
• Micro waves 

 The second generation of computers saw the use of it instead of vacuum tubes. It was widely used in computers from 1956 to 1963 and was smaller than vacuum tube and allowed computers to be smaller in size, faster in speed, and cheaper to build. The first computer to use it was the TX-0 and was introduced in 1956. What kind of technology did use in the computers?

• Transistor

• Vacuum tubes

• integrated circuits

This part of computer system manages the way data is transferred from one computer to another and work of different components of a network system.

• Hardware

• Software

• Network

Choose the appropriate wireless boundaries 

• WPAN
• WLAN
• WWAN
• WMAN

Which of the following IS NOT a computer input or output device?

• Scanner

• Webcam

• Hard disk

• Monitor