This is the 4th Lecture of the course of every beginning level course of #IT and #officeautomation. Today we will discuss about the concept of hardware and its types and their working municiples. Input devices, output devices and storing devices and the modern processing devices.
What are Hardware?
All physical parts, components or devices attached to a computer are called Hardwares. Hardwares a are simply computer devices attached with computer to take input, to process, to store data and to present output in the user acceptable format. Most commonly used examples are Keyboard, Mouse, Monitor, Hard disk and speaker.
Types of Hardware
On the basis of the operations an hardware perform we can divide them into four major types.
- Input devices
- output devices
- processing devices
- memory/storage devices
Input devices are used to capture data and instructions from user in user acceptable format and enter into computer. The whole operation is called inputting.
- Keyboard (onscreen keyboard)
- Mouse (laser, wifi)
- Microphone (soft copy)
- Digital Camera (image) , Camcorder (video)
- Scanner (soft copy), Barcode scanner, Hand Helded scanner
- Composite Device (Game Controllers, Joystick, Joy pad)
output devices are used to receive information from computer in computer accept form and convert it into user acceptable format and display or print it. The whole operation is called outputting. There are two main types of Output can be made. Hard-copy and soft-copy.
These examples of output devices also include input/output devices.Printers and visual displays are the most common type of output device for interfacing to people, but voice is becoming increasingly available.
- Screen (Monitor)
- Printer (impact and non impact)
Memory and Storage devices
Memory and storage are same in meaning but a little difference when we use both in computer literate. The Memory mean small and volatile nature of power of saving of computer. The Storage mean the permanent and non volatile “power of saving” of computer.
- RAM and Rom
- Cache memory
- Hard Disk
- Optical disk
- Removable medias (USB Drives)
- Portable Hard disk
Hard disk Partitioning and Data Recovery
Mouse control with Retina