Hardware, Network, and Software. Computer Organization.

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Presentation transcript:

Hardware, Network, and Software

Computer Organization

Kilobyte 1,000 bytes (actually 1,024) Megabyte 1,000 kilobytes 10 6 bytes Gigabyte 10 9 bytes Terabyte bytes Petabyte bytes Exabyte bytes

Types of Computers Supercomputers Mainframes Minicomputers Servers Workstations Microcomputers

Types of Computers (cont’d) Desktops Laptops Notebooks Thin-clients Network Computers WINDOWS-BASED TERMINALS (WBTs)

Types of Computers (cont’d) Dumb terminals smart card Memory buttons Embedded computers personal digital assistants (PDAs) Global positioning systems Tablet PC Wearable computers

Secondary Storage Magnetic tape Magnetic disks, or hard disks redundant arrays of inexpensive disks (RAID) magnetic diskette Zip disks

Optical storage devices Compact disk read-only memory(CD- ROM) disks Compact disk, rewritable (CD-RW) DIGITAL VIDEO DISK (DVD). FLUORESCENT MULTILAYER DISK (FMD-ROM).

Tailor-made application software off-the-shelf application software general-purpose application programs

General-purpose application programs SPREADSHEETS DATA MANAGEMENT WORD PROCESSING DESKTOP PUBLISHING GRAPHICS (Presentation, Analysis, Engineering) MULTIMEDIA( Presentation, Interactive)

SYSTEMS SOFTWARE controls and supports the computer hardware and its information processing activities. facilitates the programming, testing, and debugging of computer programs. Control, Support, and Development programs

System control programs-Operating System job, resource, and data management Monitoring performance Formatting diskettes Correcting errors Controlling the computer monitor Providing and maintaining the user interface Sending jobs to the printer Starting (“booting”) the computer Maintaining security and limiting access Reading programs into memory Locating files Managing memory allocation to those programs Detecting viruses Placing files and programs in secondary storage Compressing data Creating and maintaining directories

PROGRAMMING LANGUAGES Machine language Assembly language Procedural languages, Compilers, Interpreters. Nonprocedural or fourth-generation language (4GL), Natural language programming languages (NLPs)

Object-Oriented Languages VISUAL PROGRAMMING LANGUAGES. Web Programming Languages