First let’s try to answer the question, what is a computer port? A computer port is a physical interface with the computer that is used to connect computer peripherals. To connect any external device to a computer you require to use a connector that goes to the port in the computer. Ports are used to…
Computer cooling systems are similar to car engine systems. A computer is an electronic device that performs millions of operations per second. This means the electronic components generate a lot of heat. Electronic components like transistors, diodes, and others require a certain temperature for optimum operation. There are 2 main types of computer cooling systems,…
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…
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…
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…
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…
This is an adapter that converts the processed images from the PC processor to the computer monitor. In early PC the adapter was added to the computer as an expansion card, but in today`s PC, the VGA adapter is integrated into the motherboard. Functions of video graphic adapter (VGA) The main function of the adapter…
BIOS stands for Basic Input Output System and is also known as System BIOS. It is a piece of software stored in ROM flash memory called Complementary Metal Oxide Semiconductor (CMOS) which is an EPROM. BIOS carries the basic instructions that instruct the computer on how to boot and from where. It is a firmware…
The storage device is used to keep a copy of data or information temporally when it is being processed, or permanently for future reference. They store the data which is used by the computer and the user. The storage capacity is calculated in terms of bytes where 1 byte is made up of 8 bits…
Output devices are used to outputting of the information that has been processed from the computers. Like input devices, they are connected to the computer using various connectors like USB, VGA cables, wireless, etc. The main function of the output devices is they allow users, applications, and other devices to communicate. Communication involves the display…