1
is the use of electricity to control, communicate, and process information
electronics
is converted into an electronic signal in the transmitter of a phone
sound
Is an electronic device that stores, processes and retrieves information.
computer
Is a group of computer connected by cables or telephone lines
computer network
is a varying electric current that represents information
electronic signal
this is located in the earpiece, contains a small speaker
receiver
Refers to the permanent components of the computer
computer hardware
A set of computers connected in one classroom or office building is known as
Local Area Network (LAN)
There are two kinds of electronic signal
Analog and digital signals
this can send pictures or printed text by means of an electronic signal
fax machine
Is the temporary storage area for data while the computer is operating
RAM Random Access Memory
Computers connected across larger distances are called
Wide Area Network (WAN)
A current is varied smoothly to represent information in digital signal
true or false
false
they can be used to carry images as well as sound
electromagnetic waves
How does the ROM work?
This is the information that the computer needs to operate properly and is stored
Explain the difference between Freeware and Shareware
Freeware is a software that the author has decided to let people use at no charge.
Shareware is software that the author allows people to try out and use for a very low fee
Diode
This is an electronic device that used electrons to produce images on a screen.
Cathode-ray tube
This uses combinations of just two digits and which are they?
Binary system and 0 & 1
What are computer viruses?
Are programs that interfere with the normal operation of a computer