Introduction to Computer Science, Cheat Sheet of Computer science

Download Introduction to Computer Science and more Cheat Sheet Computer science in PDF only on Docsity! Introduction - computer system What is computer system? Acomputer along with additional hardware and software together is called computer system. i.e., computer screen, mouse , keyboard, Operating system, CPU and additional software and hardware is the ‘examples. +k Acomputer system primarily comprises a central processing unit(CPU), primary memory, input/output devices and storage devices along with OS and other software. Evaluation of computer; Evaluation of computers is generally referred as progression or improvements in concepts design and technology. oie The first CPU based computer is The vacuum Tubes. Itis big machine and the data is transferred through vacuum tubes. Theses computer are very slow and produces too much heat. ot After technological improvements, or evaluations of les ( Integrated circuits) the size of the computer is totally become small and CPU can fitted in a single chip. ie This was the time of technological advancement, in this era many companies and institutions are in the race of creating much faster and convenient computer that can process data or instructions much faster than humans. Storage And this is why, today after integrating of transistors or CPU peripherals (Resisters, transistors, diodes) devices we are now able to create a much faster and efficient computers. Todays we usages super large scale integration (SLSI) in which A single and small chip can contains millions of CPU peripherals. CPU - (Central processing concept , a Microprocessor) Input Primary Memory CPU is the central processor and also known as the brain of the computer. CPU imports the programs Devices from the computer execute as per instructions and result store back in the Storage devices. Data transfer, But tell me why cpus also known 2s Microprocessor? ‘Control, address Buses. ‘Wait! I'm explaining, You know Due to super scale integration millions of transistors, resistors can be integrated inside the single chip. And we can use that all the components in different ways. Output devices ALU (Arithmetic Ig. unit Central processing concepts shown in above figure Intoduction to computer system Page 1