computer hardware

by kara

my computer info

touch screens

A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand. Touchscreens can also sense other passive objects, such as a stylus. Touchscreens are common in devices such as games consoles, all-in-one computers, tablets

and smarphones.


Motherboard specifically refers to a PCB with expansion capability - the board is the "mother" of all components attached to it, which often include sound cards, video cards, networ cards, extra hard drives or other forms of persistent storage, tv tuner cards, cards providing extra USB or firewire slots, and a variety of thousands of other kinds of custom components. (The term mainboard is applied to devices with a single board and no additional expansions or capability - in modern terms this would include controlling boards in televisions, washing machines and other embedded systems, which are not true motherboards.


rom stands for read only memory is a class of storage medium used in computers and other electronic devices. Data stored in ROM cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware that is very closely tied to specific hardware, and unlikely to need frequent updates).


Random-access memory (RAM) is a fom of computer data storage. A random-access device allows stored data to be accessed in very nearly the same amount of time for any storage location, so data can be accessed quickly in any random order. In contrast, other data storage media such as hard disks, CD, DVDs and magnetic tape, as well as early primary memory types such as drum memory, read and write data only in a predetermined order, consecutively, because of mechanical design limitations. Therefore the time to access a given data location varies significantly depending on its physical location.

inputa and outputs

Input devices allow us to enter raw data into a computer. The computer processes the data and then produces outputs that we can understand using an output device. Input devices can be manual or automatic.

The processing is mainly handled by the Central Processing Unit (CPU).


A central processing unit (CPU), also referred to as a central processor unit, is the hardware within a computer system or smartphone which carries out the instructions of a computer by performing the basic arithmetical, logical, and input/outputs operations of the system. The term has been in use in the computer industry at least since the early 1960s. The form, design, and implementation of CPUs have changed over the course of their history, but their fundamental operation remains much the same.


A monitor or a display (also called screen or visual display unit) is an electronic visual display for computres. The monitor comprises the display device, circuitry and an enclosure. The display device in modern monitors is typically a thin film transistor liquid crysal display (TFT-LCD) thin panel, while older monitors use a cathode ray tube (CRT) about as deep as the screen size.