A computer keyboard is the main input device that almost all computers come with. It is used to enter instructions into the computer by pressing the keys which then send the command to the processor. They can be used in all kinds of devices that use different computer user interfaces from command, menu, and Graphic…
The information age can also be referred to as the computer age, digital age, or data age. The information age timeline can be dated from the 1940s when digital computers were first developed to solve human problems. It has moved the world from the industrial age to the current information age where “one who has information…
Email is also known as electronic mail. An email is an electronic way of sending a message over a network. It enables a user to send text, images, videos, and documents which are attached to another person who has an email address. The user sending the email needs to know the address of the destination…
It is the procedure of holding a meeting/video chat over the internet mostly using a webcam where participants can see each other on the screen. In recent days the internet has become fast enough to support the speed and capabilities required for holding a video conference. This has enabled the use of technology in mainstream…
Main memory is also known as the working memory of a computer, internal memory, or primary storage. Its principal function is to hold data and programs temporarily when they are being processed. It seat between the processor and the secondary storage (hard disk). The computer’s main memory is fixed on a memory slot within the…
Let’s first answer what is data. Data is the raw material or facts that are not analyzed to give any meaning. They cannot be used for decision-making because they are not arranged or organized in a manner that users can interpret. Data is taken and manipulated in different ways to give information. So the information…
A hard disk is the main secondary storage in a computer. They are used to store data, programs, and instructions permanently for later use. The disk is categorized as a magnetic disk storage device because they store data using magnetic technology. Some types of hard disks are internal or external, PATA, SATA, SCSI, and USB-connected…
An operating system is fundamental computer software that coordinates how the computer hardware and other software interface with the user. It manages all the computer resources and files. There are many types of operating systems which include batch, and network systems among others. The main functions of the operating system are processor, main memory, input…
Flash memory is a non-volatile type of storage device that is used to store and move data permanently. They are called flash memory since they are Electrical Erasable Programmable Read Only Memory (EEPROM) technology to read and write data. They use electricity to read and write many times on the device Flash memories are used…
Authentication means a way of verifying the identity of an individual, while biometrics means the use of the biological or behavioral characteristics of humans that are unique. Biometric authentication means using the unique biological characteristics of a person to verify that the user is the one that they claim to be. The user data is…