can anyone suggest me basic consecpts of computer.
If anyone then plzz. Tomorrow is my test.
Answers
The computer performs the four basic operations (input, processing, output, and storage). What are the four basic functions of computer? There are basically for basic functions of computers - input, storage, processing and output. These are described below: Input: Receiving or accepting information from outside sources.
Answer:
Computer Awareness – Basic Concepts of Computer : Introduction to Computer
is a combination of hardware and software. The physical and tangible parts/components of a computer that can be seen and touched are known as Hardware. When one looks at the computer system, he/she is actually looking at the computer hardware. The hardware consists of the physical components of a computer system like input devices (keyboard, mouse, scanner, etc.), output devices (monitor, printer, speaker, etc.), a processing device (CPU) and the storage device (Compact disk, hard disk, DVDs, etc.).
Software represents the set of programs and instructions that govern the operation of a computer system. A computer system cannot do anything on its own. It must be instructed to perform a specific task and therefore, to solve a problem the user has to specify the sequence of instructions which a computer must follow. Such a sequence of instructions is called the program and is written in a language understood by the computer.
Explanation:
Computer systems consist of three components as shown in below image: Central Processing Unit, Input devices and Output devices. Input devices help to get input or data from user. There are few other input devices which help to feed data to the computer. Computer memory refers to storage area where data is stored.
5 parts of a computer
A motherboard.
A Central Processing Unit (CPU)
A Graphics Processing Unit (GPU), also known as a video card.
Random Access Memory (RAM), also known as volatile memory.
Storage: Solid State Drive (SSD) or Hard Disk Drive (HDD)
Computer input is called data and the output obtained after processing it, based on user’s instructions is called information. Raw facts and figures which can be processed using arithmetic and logical operations to obtain information are called data.
The processes that can be applied to data are of two types −
Arithmetic operations − Examples include calculations like addition, subtraction, differentials, square root, etc.
Logical operations − Examples include comparison operations like greater than, less than, equal to, opposite, etc.
The corresponding figure for an actual computer looks something like this −
Block Diagram
The basic parts of a computer are as follows −
Input Unit − Devices like keyboard and mouse that are used to input data and instructions to the computer are called input unit.
Output Unit − Devices like printer and visual display unit that are used to provide information to the user in desired format are called output unit.
Control Unit − As the name suggests, this unit controls all the functions of the computer. All devices or parts of computer interact through the control unit.
Arithmetic Logic Unit − This is the brain of the computer where all arithmetic operations and logical operations take place.
Memory − All input data, instructions and data interim to the processes are stored in the memory. Memory is of two types – primary memory and secondary memory. Primary memory resides within the CPU whereas secondary memory is external to it.
Control unit, arithmetic logic unit and memory are together called the central processing unit or CPU. Computer devices like keyboard, mouse, printer, etc. that we can see and touch are the hardware components of a computer. The set of instructions or programs that make the computer function using these hardware parts are called software. We cannot see or touch software. Both hardware and software are necessary for working of a computer.
Hope this is helpful