- Input/Output devices
- Storage Devices
- CPU
- ALU: arithmetic/logic unit
- CU: control unit
- Interface unit
- Memory : Short-term storage for CPU calculations
User
- Understand system capabilities and limitations
- Make informed decisions
- Improve communications with information technology
professionals
Systems Analyst
- Conduct surveys, determine feasibility and define and
document user requirements
- Specify computer systems to meet application requirements
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Early History
- 1642: Blaise Pascal invents a calculating machine
- 1801: Joseph Marie Jacquard invents a loom that uses punch cards
- 1800’s : Charles Babbage attempts to build an analytical engine (mechanical computer), Augusta Ada Byron develops many of the fundamental concepts of programming, George Boole invents Boolean logic.
- 1937: Mark I is built (Aiken, Harvard University, IBM) : First electronic computer using relays.
- 1939: ABC is built : First fully electronic digital computer. Used vacuum tubes.
- 1943-46: ENIAC (Mauchly, Eckert, University of Pennsylvania) : First general purpose digital computer.
- 1945: Von Neumann architecture proposed : Still the standard for present day computers.
- 1947: Creation of transistor : (Bardeen, Shockley, Brattain, Bell Labs).
- 1951: UNIVAC
First commercially available computer.
Copyright 2003 John Wiley & Sons
3rd Edition, Irv Englander
John Wiley and Sons Ó2003
Wilson Wong, Bentley College
Linda Senne, Bentley College
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