HARTRON EXAM THEORY PART -04

Inside the system unit

System unit

The system unit is also sometimes called a chassis (body). It looks like a box containing electronic elements processing the data. This prevents damage to the electronic elements inside. Every computer has a system unit.
Devices that store more electronic elements are within the system unit itself. Other devices such as keyboard mouse microphone printer speaker scanner camera etc. are outside the system unit.

Mother board

The mother board is called the main board or system board. It is the main board which has Saket and can also connect other boards. The mother board consists of several types of chips, of which the processor or central processing unit is the main one.HARTRON EXAM

CPU (Central Processing Unit)

The CPU is called the brain of the computer. Most devices connected to a computer communicate with the CPU to perform a task The speed of the CPU chief is measured in GHz. The higher the CPU chip speed, the faster the computer works. Typically Intel Pentium chips can have speeds up to 500 MHz, 933 MHz, 1.0 GHz, 2.0 GHz, 3.0 GHz or more.

Memory

Memory plays an important role in computers. Memory contains both the data to be processed and the one that has been processed. It is a temporary place to store memory, data, instructions and information. This memory and other memories, called primary storage, is made up of one or one chip. Which is mounted on a mother board or a circuit board of a computer.HARTRON EXAM

RAM (Random access memory)

Ram is mostly called memory. RAM consists of memory chips which can be read and written with the help of processor. When the computer is turned on, some operating system files are loaded from storage devices such as hard disks and come into RAM. These files remain in RAM until the computer runs. Some other programs and data are also loaded into RAM.As long as the data is in RAM, the processor interprets / estimates it. During this time, the contents of Ram may change. If Ram’s capacity is high, it can store multiple programs simultaneously. The program you work on appears on the computer screen. Most RAMs are unstable. It gives its contents as soon as the computer is closed. Therefore, data has to be saved for future use. The process of copying the objects in the run to the hard disk is called saving.HARTRON EXAM

Rom (Read only memory)

ROM comes under the category of storage media which is used in computers and other electronic devices. No change can be made in the scolding present in Rome. It is not unstable. After the computer is turned off, it does not have its own content. The ROM’s chip contains permanent data, instructions and information. For example, it has a basic input / output system with a series of instructions in which the operating system and other files are loaded as soon as the computer starts. HARTRON EXAM
Many other devices also have a ROM chip. For example, the ROM in the printer contains data related to fonts in the chip.

Expansion Slots and Expansion Cards

Expansion slots are sockets with the help of which the circuit board is attached to the motherboard. These circuit boards work by adding new devices to the computer or increasing the capacity of the computer. As an example, this expands memory, enhances the quality of sound-related devices and graphics and models. Many times an instrument or a dimension is created as a card.This expansion card, among other reasons, is connected to a device such as a scanner with the help of a cable.

Ports

The old computer has a connector or socket attached to it. External devices such as keyboards, monitors, printers, and mouse are mostly connected to the system unit with the help of a cable that transfers data and information between these devices and the computer. The port serves to connect the cable to the equipment. One end of the cable is connected to the port on the system unit and the other end to the connector on the device.HARTRON EXAM

Power supply

The power supply converts alternating current into direct current and this is how the computer works. Power supply capability is measured in watts. An average computer uses around 250 watts while a simple ball runs at 60 watts of electricity. The internal temperature of the computer is controlled with the help of a fan inside the power supply.