Explaining the Computer System and Comparing the Products

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CONTENTS Introduction 1 The role of computer systems in different environments 1 School 2 Bank 3 Police Station 3 The hardware, software, and peripheral components of a computer system 4 Hardware 4 Software 8 Peripherals 8 INTRODUCTION The following document will cover these subjects: • Explaining the role of a computer system in different environments. • Explaining the hardware, software and peripheral components of a computer system. • Comparing different types of computer systems. THE ROLE OF COMPUTER SYSTEMS IN DIFFERENT ENVIRONMENTS This part of the document will be explaining the role of computer systems. The environments will be a school, a bank, and a police station. The computer systems that will be discussed are, microcomputers, minicomputers, mobile, supercomputers, and mainframe. Microcomputer, or personal computers as they are more commonly known, are computers where the central unit contains a microprocessor. Microcomputers are also made up of ROM (read-only memory) & RAM (random-access memory) memory, I/O ports, and a bus system. Some examples of microcomputers are: • Laptops • Desktops • Tower • Notebook Minicomputers can be midsized computers that are capable of simultaneously handling up to 150 users, and they can be midrange servers that are capable of holding terabytes worth of data, as well as, being a web server to control access to internet. Mobile is the system that is used on smartphones, tablets or PDA. A mobile system makes the devices it is used on more accessible as it can transported around. The mobile devices contain a mobile operating system that allows them to run applications/programs, like Windows would on a microcomputer. Some examples of mobile are: • Smartphone • Tablet • PDA ... ... middle of paper ... ...used to print out texts, and/or graphics on paper. There are many different types of printers, such as, laser, inkjet, and LCD/LED. Laser printers focus their laser on to a drum, and then produce the pattern that is going to be printed out. Whenever the drum is hit by the laser it is electrically charged. When it is fully charged and the image has been produced on the drum, the drum is coated in toner. The toner then transfers the pattern on the paper, which is then heated to fused the pattern to the paper. Inkjet printers work by spraying ionized ink on paper, which is then moved into the correct shape by the magnetized plates in the printer. STORAGE DEVICES Storage devices, such as, flash drives or an external hard drive are external peripherals used for storing data. They are connected to the computer via a USB slot. COMPARING DIFFERENT COMPUTER SYSTEMS

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