Hardware 1 Introduction and Overview Dr John Cowell phones off (please)

Overview Personal introduction Module outline topics assessment resources the Blackboard site Introduction to hardware types of computers definitions of hardware and software basic computer components © De Montfort University, 2008CSCI1412-HW-12

Module Tutors Lecturers Dr. John Cowell – module leader roomG6.62 © De Montfort University, 2008CSCI1412-HW-14

Module Outline Teaching by lectures, tutorials and labs one hour lecture per week one hour laboratory session one hour tutorial plus lots of private study You will need the coursebook: Computer systems and networks : Barry Blundell : Thompson Press Topics (lectures are clearly signposted by topic) computer hardware and robotics application software (spreadsheets, dreamweaver, CPU simulator) overview of operating systems and logic basic networking See the Blackboard site © De Montfort University, 2007CSCI1412-HW-15

Weekly Topics – Term 1 Week noLecture Title 1HW1: Introduction and Overview 2HW2: Basic Architecture 3HW3: More Architecture 4OS1: Introduction to Operating Systems 5OS2: Operating Systems: Processes 6HW4: Backing Storage 7L1: Logic Gates & Truth tables 8OS3: Operating Systems: File Management 9HW5: Interfacing and I/O Peripherals 10I1: Introduction to the Internet 11I2: Internet Programming © De Montfort University, 2007 CSCI1412-HW-16

Weekly Topics – Term 2 Week noLecture Title 15HW6: Displays and Printers 16HW7: System Specification 17R1: Introduction to Robots 18HW8: Basic Communications 19N1: Introduction to Networks 20N2: Network Layer Models 21N3: Network Hardware 22N4: Network Topologies and Protocols 23N5: Mobile Networks and Telecommunications 24N6: Network Security 25N7: Network Administration and Planning © De Montfort University, 2007 CSCI1412-HW-1 7

Course Assessment Assessment by 3 Multiple Choice Phase tests 25% each 1 lab tests 10% each 1 assignment 40% The best two of the 3 phase test is used to calculate your final mark. Reassessment by 2 hour test See Blackboard for assessment details © De Montfort University, 2007CSCI1412-HW-18

Resources Web Sites (linked from BB module home page) webopedia.internet.com Books Computer Systems and Networks : Barry Blundell: Published by Thomson. You will need this book – the bookshop has copies. © De Montfort University, 2007CSCI1412-HW-19

Basic Definitions Hardware plastic, metal and glass components things you can trip over! Software set of instructions and data processed by the hardware used to control the hardware Firmware A program embedded in a hardware device (somewhere between hardware and software). © De Montfort University, 2007CSCI1412-HW-111

Centralised Computer Types There are different types of computers mainframe / supercomputer very large & expensive dedicated staff, rooms used by large businesses, financial and government hundreds of users, via (dumb) terminals mini similar to mainframes, much smaller in scope tens of users © De Montfort University, 2007CSCI1412-HW-112

Distributed/Personal/Embedded Computer Types micro PC systems, workstations single user distributed systems networks of workstations client/server personal digital assistants palmtops, address books, calculators dedicated (embedded) e.g. washing machines, toasters, cars © De Montfort University, 2007CSCI1412-HW-113

Software Families There are four families of software applications produce documents, commonly business oriented e.g. MS Word, Excel, Lotus WordPro, etc. operating systems control software for computer systems - provide the interface between user and hardware e.g. Windows Vista/XP, DOS, UNIX, Linux, VME © De Montfort University, 2007CSCI1412-HW-114

More Software Families Four families of software continued... utility software maintenance & problem solving tools - housekeeping e.g. Symantic Norton Utilities programming languages used to develop software, often with an Integrated Development Environment (IDE) e.g. C, Pascal, C++, C#, Java, Visual Basic, COBOL, FORTRAN, Modula, Forth, LISP, etc. © De Montfort University, 2007CSCI1412-HW-115

Basic Computer Architecture Computer systems comprise central processing unit - the CPU the ‘brain’ or ‘heart’ of a computer peripheral devices the devices that supply information to the CPU, and give the results to the outside world analogous to human senses, and memory aids such as books, etc. © De Montfort University, 2007CSCI1412-HW-117

System Diagram © De Montfort University, 2007CSCI1412-HW-118 CPU Input Devices Communication Devices Backing Storage Output Devices represents flow of data/instructions

CPU Components CU: Control Unit interprets stored instructions in sequence issues commands to all elements of the computer system ALU: Arithmetic & Logic Unit performs arithmetic and logic instructions Traditionally the CPU also included RAM: Random Access Memory holds data, instructions and results of processing temporary (volatile) Often, CPU is used to mean just the CU and ALU the ‘processor’ or ‘microprocessor’ © De Montfort University, 2007CSCI1412-HW-119

CPU Diagram © De Montfort University, 2007CSCI1412-HW-120 notice that all information enters and leaves the CPU via the RAM CPU Input Devices Communication Devices Backing Storage Output Devices control unit arithmetic & logic unit RAM (micro-) processor

Peripheral Devices Peripheral devices are input data and instructions output information - the results of processing backing storage supplements main storage (RAM) - permanent communications links to other systems, e.g. networks © De Montfort University, 2007CSCI1412-HW-121

Peripheral Diagram © De Montfort University, 2007CSCI1412-HW-122 Input Devices keyboard mouse scanner microphone barcode reader MICR reader OCR reader OMR reader magnetic strip game console Output Devices monitor (VDU) printer speaker Backing Storage disk drives:floppy hard DVD CD tape drives:digital audio (DAT) Communication Devices modem network interface card (NIC) Infra-Red Wireless CPU control unit arithmetic & logic unit RAM

System Control Signals © De Montfort University, 2007CSCI1412-HW-123 Input Devices keyboard mouse scanner microphone barcode reader MICR reader OCR reader OMR reader magnetic strip game console Output Devices monitor (VDU) printer speaker Backing Storage disk drives:floppy hard DVD CD tape drives:digital audio (DAT) Communication Devices modem network interface card (NIC) Infra-Red Wireless CPU control unit arithmetic & logic unit RAM

Summary Personal introduction Module outline topics assessment resources the module web site Introduction to hardware types of computers definitions of hardware and software basic computer components © De Montfort University, 2007CSCI1412-HW-124