Computer components is a programmable machine that receives input, stores and manipulates data, and provides output in a useful format. Computer The computer programs (sequences of instructions) that tell the computer what to do in response to a command or some event. Hardware Software The physical components (electrical circuits) that make up the computer System Memory holds the data that the computer will process and the instructions that indicate what processing is to be done. Processor Application These devices translate electronic signals into mechanical motion or light (or vice versa) so as to communicate with people Central Processing Unit (CPU) or microprocessor, controls the operation of the computer and performs its data processing functions. consists of operating systems, language translators, and utility programs. Coordinates the various parts of the computer system and mediates between application software and computer hardware. programs to perform specific functions specified by end users. Must operate through the system software to work Input/Output

Arithmetic/ logic unit (ALU) Hardware Keyboard Mouse Touch pad Scanner Web camera Microphone Printer Speakers Headphones Monitor Source and destination addresses are sent over the address bus to identify a particular location in memory or input/output port Address bus RAM random-access memory ROM read-only memory MEMORY I/O DEVICES Main Input CPU Secondary Output Control unit (CU) reads and interprets the program instructions, transforming them into a series of control signals which activate other parts of the computer Arithmetic/ logic unit (ALU) two way path for transferring data and instructions in and out of the microprocessor Data bus is not directly accessible to the CPU, requiring the use of computer input/output channels. Magnetic disk (Hard disk,Flash) Optical media (CD, DVD ) Control Lines bus perform the set of arithmetic and logic operations: adding, subtracting, multiplying, dividing and etc. The control bus synchronizes system events like memory access, system interrupts, I/O, etc

a software, which makes a computer to actually work, enables all the programs we use, organizes and controls the hardware, acts as an interface between the application programs and the computer hardware. Examples: Windows, Linux, Unix and Mac OS, etc., Software Operating system converts high level language into low level language & vice versa as computer can only understand in binary format Language translator help to perform specific tasks in the areas: Data management Documentation Collaborative and Content access Entertainment Media development and etc. Utility programs Prewritten programs that can be used rapidly when requested for routine, repetitive tasks: Copying, setting up new files, deleting old files, formatting diskettes and so on is a programming language or programming environment designed with a specific purpose in mind, such as the development of commercial business software (DBMS) specially written code used for writing applications. (C++, Java). Programming languages Fourth-generation languages Software packages and desktop productivity tools