It is about the hardware and software components of the computer.
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4. Hardware refers to the equipment in a
CBIS.
3 perspectives of organizational computing
are
• Large system computing
• Stand alone personal computing
• Network computing
5. In large-system computing configurations,
terminals are attached to a central
computer. The central computer performs
most computations and controls attached
peripherals such as printers.
6. Personal computers are used for individual
work. Stand alone systems are not linked
to other personal computers or large
systems.
7. In network computing, multiple
workstations allow users to share data
and computing resources, both local and
remote. Personal computer networks may
also be linked to large systems.
8. End user input devices
Pen-based technologies
Imaging and digitizing devices
Voice input devices
Special purpose input devices
• Source data automation
• Specialized keyboards
• Optical character recognition
• Magnetic ink character recognition
9.
10. Central processing unit
Primary memory
Machine cycle –to process program
instruction
Sizing – bits, bytes, hertz, MIPS and
FLOPS
Parallel processing
16. Application software
• Easy-to-use programs designed to perform
specific tasks
System software
• Programs that support the execution and
development of other programs
• Two major types
Operating systems
Translation systems (compilers &
linkers)
17. Operating system and its components
• Supervisor/kernal
• Command-language interpreter
• BIOS
Existing operating system
• MS-DOS
• Macintosh
• Windows
• UNIX
• LINUX
Interleaving techniques in OS
• Multiprogramming
• Multitasking
• Timesharing
• Foreground/ background processing
• Virtual memory
• Multi processing
Language translators
• Compilers , interpreters and assemblers
Utility program
• Sorting, spooling and text editors
20. Computer Software Relationships
User
Interface
User Interface
User Interface
Application Programs
Operating System
Basic Input and Output Services (BIOS)
• needed for a computer to boot up
Computer Hardware
21. General purpose Application software
• Word Processing
• Spreadsheets
• File Managers and database management systems
Special Purpose Application Software
• Transaction Processing
• Analysis & Decision Making
• Planning, coordinating, Scheduling and organizing
• Retrieving and updating
• Reporting
• Writing
• Presentation
• Communication
• Training
Programming languages
• From low level to 4GLs
22. 1. Explain Software engineering and also
discuss CASE tools.
2. What are the managerial issues related
to software and application development.