Basics of Computers Tutorial
Basics of Computers Resources
Selected Reading
- Basics of Computers – I/O Ports
- Secondary Memory
- Primary Memory
- Evolution of Microprocessor
- Microprocessor Concepts
- Number System Conversion
- Number System
- Domain Specific Tools
- Basics of Computers – Office Tools
- Open Source Software
- Basics of Computers – Utility S/W
- Types of Operating System
- Functions of Operating System
- Basics of Computers – System S/W
- Basics of Computers – S/W Concepts
- Basics of Computers - Classifications
- Basics of Computers – Introduction
- Basics of Computers – Home
Basics of Computers Resources
Selected Reading
- Who is Who
- Computer Glossary
- HR Interview Questions
- Effective Resume Writing
- Questions and Answers
- UPSC IAS Exams Notes
Basics of Computers – I/O Ports
Basics of Computers - Input/Output Ports
A connection point that acts as interface between the computer and external devices pke mouse, printer, modem, etc. is called port. Ports are of two types −
Internal port − It connects the motherboard to internal devices pke hard disk drive, CD drive, internal modem, etc.
External port − It connects the motherboard to external devices pke modem, mouse, printer, flash drives, etc.
Let us look at some of the most commonly used ports.
Serial Port
Serial ports transmit data sequentially one bit at a time. So they need only one wire to transmit 8 bits. However it also makes them slower. Serial ports are usually 9-pin or 25-pin male connectors. They are also known as COM (communication) ports or RS323C ports.
Parallel Port
Parallel ports can send or receive 8 bits or 1 byte at a time. Parallel ports come in form of 25-pin female pins and are used to connect printer, scanner, external hard disk drive, etc.
USB Port
USB stands for Universal Serial Bus. It is the industry standard for short distance digital data connection. USB port is a standardized port to connect a variety of devices pke printer, camera, keyboard, speaker, etc.
PS-2 Port
PS/2 stands for Personal System/2. It is a female 6-pin port standard that connects to the male mini-DIN cable. PS/2 was introduced by IBM to connect mouse and keyboard to personal computers. This port is now mostly obsolete, though some systems compatible with IBM may have this port.
Infrared Port
Infrared port is a port that enables wireless exchange of data within a radius of 10m. Two devices that have infrared ports are placed facing each other so that beams of infrared pghts can be used to share data.
Bluetooth Port
Bluetooth is a telecommunication specification that faciptates wireless connection between phones, computers and other digital devices over short range wireless connection. Bluetooth port enables synchronization between Bluetooth-enabled devices. There are two types of Bluetooth ports −
Incoming − It is used to receive connection from Bluetooth devices.
Outgoing − It is used to request connection to other Bluetooth devices.
FireWire Port
FireWire is Apple Computer’s interface standard for enabpng high speed communication using serial bus. It is also called IEEE 1394 and used mostly for audio and video devices pke digital camcorders.
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