Question

All functional units of PC work together in perfect coordination. Comments

Answer 1

Answer:

Components of a Computer System

Saying that computers have revolutionized our lives would be an understatement. These machines have completely changed the way we perform all daily tasks. In order to further maximize their potential, we must understand the core components of a computer system in detail – input unit, output unit, CPU.

Meaning of Computers

Computerized Accounting System

Computers, in simple words, are machines that perform a set of functions according to their users’ directions. Going by this definition, several electronic devices, from laptops to calculators, are computers.

A computer comprises of some basic elements. These include hardware, software, programmes, data and connectivity. No computer can function in the absence of these elements. Apart from these elements, a computer system comprises of three basic components. These components are responsible for making computers actually function. Let’s take a look at them in detail.

Components of a Computer System

Every computer system has the following three basic components:

Input unit

Central processing unit

Output unit

Components of a Computer System: Input Unit, Output Unit, CPU

While there are other components as well, these three are primarily responsible for making a computer function. They must work in complete synergy because that will ensure smooth overall functioning. Hence, we can even call them building blocks of a computer system.

Input Unit

These components help users enter data and commands into a computer system. Data can be in the form of numbers, words, actions, commands, etc. The main function of input devices is to direct commands and data into computers. Computers then use their CPU to process this data and produce output.

For example, a laptop’s keyboard is an input unit that enters numbers and characters. Similarly, even a mouse can be an input unit for entering directions and commands. Other examples include barcode readers, Magnetic Ink Character Readers (MICR), Optical Character Readers (OCR), etc.

Another example of input devices is touch-screens. Users can simply touch these screens without using any other device to enter commands. From smartphones to ATM machines, these input devices are becoming very popular these days.

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Answer 2

Yes, all the functional units of a PC work together in perfect coordination as they are linked together. The input and output affect these units in a similar fashion.

• Computers are machines that performs a collection of functions according to the directions of their users.
• in the control centre known as the central processing unit ( CPU)., the of the computer the primary task are performed. It leads to the transformation of input of data to output of information.
• CPU is a highly complex, comprehensive collection of electronic circuitry which executes instructions for the stored program.
• The CPU's control unit contains circuits employing electrical signals to guide the system for the execution of stored instructions for the particular program.
• The control unit directs other parts of the system to do the same and also effectively communicate with both the memory and ALU.
• The arithmetic logic unit ( ALU) comprises the electronic circuitry that conducts both logical and arithmetic operations.