A Basic Introduction To Computer Systems:
Welcome to computer science. You are in a world which offers many challenges and exciting careers.
Here, we introduce you to the concepts which are dealing with computer science and especially about programming, coding, and the languages which are understood by the computers. A computer system is a combination of all the components required to process and store data using computer. Each and every system is composed with multiple pieces of Hardware and Software.
Hardware:
Hardware is a physical device which is associated with a computer. Devices like keyboards, mice, speakers, and printers are all hardware devices. The hardware components of the computer systems are divided in to three parts:
1.Input devices
2.Storage devices
3.Output devices
Keyboard is considered to be as an input device.
Storage device is of Central Processing Unit(CPU).
Primary storage devices are like pen drives,disks,and taps etc.
Monitors and Printers are of output devices.
Keyboard:
Keyboard is a device in which programs and data to be entered into the computer. Other examples of input devices include a touch screen, stylus or a pen, an audio input unit, and a writing note pad.
CPU:
Central processing unit is responsible for executing arithmetic calculations. Primary storage device is considered to be as main memory, since it is a place in which programmers can store the programs and data temporarily during processing. It can be erased if we turn off the system. Since it is stored in RAM(Random Accessing Memory). Auxiliary storage device is considered as a secondary storage device, which is used for both input and output. It is a place where the programs are stored permanently. When we turn off the computer, our programs and data will be stored in secondary storage devices like hard disks, and pen drives.
Monitors and Printers:
Output devices are usually monitors and printers that which shows the output. The shown output or the displayed output on the screen of the monitor will be considered to be as a soft copy. If we prints on a printer, then the output printed copies are of hard copies.
Software:
Software is computer's instructions that tells the hardware what to do. Simply we can say that the software is a programs instructions written by a programmer. There can be a plenty of p rewritten programs which are stored in a disk. Also it can be available to buy by the users and it can be downloaded from the WEB.
Side by side we can also write our own programs, which is known-ed to be as coding the program or programming. This site mainly focuses on the coding the programs or the programming process and the logic which are used to write a program.
Software can be classified in to two categories:
The system software, and the Application software.
System software:
System software comprises the programs that you use to manage your system or a computer, including operating systems such as Windows, LINUX, or UNIX.
Software applications :
Software applications comprises all the programs you apply to a task. Which are of like word processing programs, spread sheets, payroll, and inventory programs, and also even games.
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