DEFINITIONS IN THE EXAM
DEFINITIONS IN THE EXAM
AT AND ATX
AT which is basically responsible for transforming the alternating current of the electric line into direct current.
ATX It is a device that is mounted internally in the computer cabinet
it is a source of electrical energy that supplies or provide the computer
ROM AND RAM
It does not require a constant source of power to retain the information stored on it. Can only read.
it loses any information it is holding when the power is turned off. Can read /write.
ROM is the memory used for the System
WHAT IS BIOS
small piece of software hosted on the motherboard
The motherboard is a computer’s central communications backbone connectivity point, through which all components and external peripherals connect.
function is to activate all the controllers and functions necessary for the correct functioning of the PC.
Software and Hardware
Hardware refers to the physical elements of a computer.
Software, commonly known as programs or apps, consists of all the instructions that tell the hardware how to perform a task.
is a memory technology applied to computers or personal computers, which allows increased productivity thanks to simultaneous access to two different memory modules.
An expansion card that provides inputs and outputs for analog and digital video. It is used to link video cameras, camcorders and tape decks to the computer for editing.
A disk drive in a sealed unit containing a high-capacity hard disk and the read-write heads.
refers to the copying of physical or virtual files or databases to a secondary site for preservation in case of equipment failure or other catastrophe.
It is used in computer cabinets and other electronic devices to cool them. Usually hot air is drawn from inside the device with the coolers.
They collect data from a variety of different communication channels, including the website, telephone, email, live chat, marketing materials and, more recently, the company's social networks.
They are the management information systems that integrate and manage many of the businesses associated with production operations and the distribution aspects of a company in the production of goods or services.
VIRUSES AND ANTIVIRUS
Viruses are computer programs that are intended to alter the operation of the computer, without the user being aware of it.
They are crated programs with the aim of detecting and eliminating computer viruses.
Byte, KB, MB, GB, TB
is the minimum unit of information
is the fundamental unit of data in personal computers
Kilobyte and Megabyte
is used to count bytes
Unit used to measure quantity of computer data.