CBSE Grade XI - Computer system overview - Lesson 1
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The document provides an overview of computer systems, detailing components such as hardware, software, and memory. It explains the roles of input units, output units, the CPU, and the ALU in processing data, along with software types like system software and application software. Additionally, it highlights the importance of memory in data storage and management.
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CBSE Grade XI - Computer system overview - Lesson 1
- 1. Computer System Overview Grade XI – Computer science Teacher – Sumedha Deshpande
- 3. Input / Output Unit Input Unit • An input unit takes the input and converts it into binary form so that it can be understood by the computer. Output Unit • Output unit converts the output in binary form to human readable form. Sr. No. Input Data Instruction 1. Add 2 and 3 2,3 Add 2. Print “Hello World” “HelloWorld” Print
- 4. The CPU – Central Processing unit ALU – Arithmetic Logic Unit • ALU performs arithmetic and logical operations. • Result is sent back to the memory after processing Registers • Small units of data holding places used to hold some important information during processing
- 5. The CPU – Central Processing unit CU – Control Unit Controls and guides interpretation, flow and manipulation of all data and information. Memory
- 10. The Storage Unit
- 12. Types of software Software System Software OS Language Processor Application Software Packages Utilities s/w Libraries
- 13. Working hierarchy in computer