Guwahat/axom TECH

26/06/2025

26/06/2025

EARN FROM HOME.

26/06/2025

Peripheral devices:
A computer system is made up of three major units – Input, Output and storage unit that carry out its primary functions. There are many other internal and external devices that connect to the computer directly and add functionality to it. These devices are called PERIPHERAL DEVICES. They perform various secondary operations like capturing images, recording videos, connecting to internet, etc.
The term peripheral device refers to all hardware components that are attached to a computer and are controlled by the computer system, but they are not the core components of the computer like CPU, motherboard, and power supply etc. Need of memory (RAM), hard disk and various other peripheral devices necessary so that your computer functions to its potential. Peripherals are the devices which can be easily removed and plugged in into the computer system. Examples of peripherals are-mouse (inbuilt in case of laptop), keyboard (inbuilt in case of laptop), printer, scanner etc.
Types of Peripheral Devices:-
1. Internal
2. External
Internal Peripheral Devices:- The devices that are a part of the computer system’s cabinet, and works as its internal components. Some commonly used internal peripheral devices are:
a. Graphics card b. Sound card c. Optical disk drive d. Modem e. NIC f. Wi-fi g. Blue tooth.
External Peripheral Devices:-The devices that are connected externally to the computer system are known as external peripheral devices. A few examples of external peripheral devices are:
a. Memory card reader b. Camcoder c. Midi Equipment d. Smart Phones e. Tablets f. Smart watches g. Printer h. Monitor i. Digital Camera j. Zip Drive.
Some important Peripheral Devices are discussed below:-
Modem:- Stands for Modulator/Demodulator. It is a hardware that allows a computer or other devices, such as router or a switch, to connect to internet. Since a computer only recognizes digital signal, the modem modulates(or converts) an analog signal from a telephone cable to adigital signal, to transfer data to the computer. Similarly, it demodulates digital data from a computer or other devices to an analog signal. Speed of modem is measured in bps(bits per second).
Modems are classified into to categories:
1. Internal modem- it is a circuit board that is plugged into an expansion slot of the motherboard inside a computer. It draws power from the computer and is less expensive than an external modem.
2. External modem is a small box that is connected to the CPU and telephone line. It like a box kept outside the computer and can be connected to it with the help of a serial port or a USB port. It can be used with more than one computer.
Network Interface Card(NIC):-
It is a small circuit board used to connect the computer to a local area network(LAN). It is usually in the form of a card that fits in an expansion slot on the motherboard of a computer. Every computer that is a part of the network must have at least one NIC. Most NICs are designed for a specific type of network, protocol, and media. The network card is also used to control the data flow between the computer and the network. The data transfer rate of an NIC may be 10/100/1000Mbps(Megabits per second).
Wireless Adapter for Wi-fi:
Wi-fi stands for wireless fidelity. It is a technology that allows or the other devices to connect to the internet or communicate with each other wirelessly.
Bluetooth Adapter:-
Bluetooth is a technology that connects multiple products wirelessly using short wave length radio waves.

……………………………………………………. O …………………………………………………………………

17/06/2025

DISCUSSION 1 Dated:17.06.2025
What is computer?
The full form of computer is- Common Oriented Machine Particularly Used for Trade and Education Research.
Basic components of computer-
1. Hardware- physical components of a computer that can be touched and felt e.g., CPU(Central Processing Unit), Monitor, We**am (if equipped), headphone, Keyboard, Mouse, Motherboard, RAM(Random Access Memory), Joystick, Speaker etc.
2. Software- a collection of programs and procedures that instructs a computer how to perform different types of tasks.
Types of Software-
a. System software.
b. Application software.
Parts of computer-
Input Unit: The devices used to provide input to the computer constitutes Input unit. Examples are-Keyboard, Mouse, Scanner and Joystick.
Output Unit: The devices that are used to display output after processing comprises output unit, such as, monitor, printer, we**am, headphone, speaker etc.
CPU(Central Processing Unit): also known as brain of the computer. The CPU receives the data from the user as input, interprets, and executes it, and presents the out as information. It communicates with input/output devices, which send and receive to and from the CPU.
Components of CPU: The arithmetic and logic unit, Control Unit and Memory Unit.
The arithmetic and logic unit: carries out the basic calculations and comparision operationsons the data.
Control Unit: Controls and coordinates the functions of various devices attached to CPU.
Memory Unit: is the principal storage of a computer. Data can be stored either temporarily or permanently. Computer memory ca be broadly classified into two types- internal memory and external memory.

Internal memory: is also called primary memory or main memory. It is the main area in a computer where data, instructions, and information are stored. It is directly accessed by the CPU. This memory consists of RAM (Random Access Memory) and ROM (Read only memory) Chips. Ram holds the data temporarily and volatile in nature i.e., the data is lost when the power supply is switched off. RAM is also called read/write as we can read information from it as well as write instructions on it.
On the other hand, ROM is non-volatile. The data and instructions saved in ROM are not lost even when the power supply is switched off.

External Memory: The external memory or the secondary memory refers to the various storage devices connected to a computer. This memory is used to store data permanently. The common storage devices are hard disk, CDs, DVDs, Pen drive, etc.

17/06/2025

DISCUSSION 1 Dated:17.06.2025

What is computer?
The full form of computer is- Common Oriented Machine Particularly Used for Trade and Education Research.

Basic components of computer-
1. Hardware- physical components of a computer that can be touched and felt e.g., CPU(Central Processing Unit), Monitor, We**am (if equipped), headphone, Keyboard, Mouse, Motherboard, RAM(Random Access Memory), Joystick, Speaker etc.
2. Software- a collection of programs and procedures that instructs a computer how to perform different types of tasks.
Types of Software-
a. System software.
b. Application software.

Parts of computer-
Input Unit: The devices used to provide input to the computer constitutes Input unit. Examples are-Keyboard, Mouse, Scanner and Joystick.
Output Unit: The devices that are used to display output after processing comprises output unit, such as, monitor, printer, we**am, headphone, speaker etc.
CPU(Central Processing Unit): also known as brain of the computer. The CPU receives the data from the user as input, interprets, and executes it, and presents the out as information. It communicates with input/output devices, which send and receive to and from the CPU.

Components of CPU: The arithmetic and logic unit, Control Unit and Memory Unit.
The arithmetic and logic unit: carries out the basic calculations and comparision operationsons the data.
Control Unit: Controls and coordinates the functions of various devices attached to CPU.
Memory Unit: is the principal storage of a computer. Data can be stored either temporarily or permanently. Computer memory ca be broadly classified into two types- internal memory and external memory.

Internal memory: is also called primary memory or main memory. It is the main area in a computer where data, instructions, and information are stored. It is directly accessed by the CPU. This memory consists of RAM (Random Access Memory) and ROM (Read only memory) Chips. Ram holds the data temporarily and volatile in nature i.e., the data is lost when the power supply is switched off. RAM is also called read/write as we can read information from it as well as write instructions on it.
On the other hand, ROM is non-volatile. The data and instructions saved in ROM are not lost even when the power supply is switched off.

External Memory: The external memory or the secondary memory refers to the various storage devices connected to a computer. This memory is used to store data permanently. The common storage devices are hard disk, CDs, DVDs, Pen drive, etc.

29/05/2025

Welcome to Guwahati/axom TECH