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To put it in simple words a computer can be defined as an electronic device that processes instructions and produces an output to the user. To unveil the secret behind this process, understanding of individual components is important.
Chapter 1: Types and components of computer systems. Learning objectives. When you have finished this chapter you will be able to: define the physical components of hardware for a computer system, including identifying internal hardware devices. identify external hardware devices and peripherals.
Monitors, commonly called as Visual Display Unit VDU, are the main output device of a computer. It forms images from tiny dots, called pixels that are arranged in a rectangular form.
Output devices An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) which converts the electronically generated information into human-readable form. Example on Output Devices: 1. Monitor 2. LCD Projection Panels 3.
1.3.1 Input, output & storage devices, 1.3.2 Main memory. Input devices: An input device is any hardware component that allows you the user to enter data or instruction into the computer. There are many manual/automatic input devices. Most widely used input devices are: Keyboard. Pointing devices. Tracker ball mouse. Laser mouse. 2D, 3D Scanners.
Output: graphical and text output transmitted to the computer screen. This Unit expands our repertoire to include: File Input – Python can read in the contents of files. File Output – Python can write text to files. Files. File = Named Data Collection stored on memory device. Different types of data: text, binary, etc. Accessible by name or address
•A standard output device is the computer monitor, which displays text, images, and user interface elements by lighting up thousands of pixels with different colors. •There are many other ways a computer could output data. If the output device can interpret a stream of 1s and 0s, it can turn that data into anything – •headphones output ...
