Sunflower

• Information Technology (IT) involves the understanding and design of computers and computational processes
• IT is a mixture and application of Applied Mathematics, Electrical Engineering, and Complexity Theories/Algorithms to understand and/or model information
• A central focus of IT is on processes for handling and manipulating information
• Computer Science is the study of computers and computational systems
• It involves understanding algorithms, programming languages, software development, and the theory behind computing
• Difference between Computer Science and Information Technology (ICT/IT):

  • Computer Science deals more with creating hardware and software
  • Information Technology involves maintaining computers and networks, as well as installing, updating, and fixing software issues
• A computer is an electronic device that transforms data into useful information
• It is a machine that performs a variety of tasks according to specific instructions
• Basic functions of a computer:

  • Accept data
  • Store data
  • Process data
  • Generate Information
• Characteristics of a Computer:

  • Speed
  • Accuracy
  • Reliability
  • Storage
  • Diligence
  • Versatility
  • Resource Sharing
• Classification of Computers:

  • Analog Computers:
  • Functions on data in the form of continuously variable quantities
  • Measure continuous physical magnitudes like speed, temperature, pressure, and voltage
  • Digital Computers:
  • Operates with information represented in a digital form, works on digits like 0's and 1's
  • Hybrid Computers:
  • Exhibit features of both analog and digital computers, used in process control and robotics
• • Special-purpose machines designed to maximize the number of FLOPS, process a great deal of information and make extensive calculations very quickly, fastest, costliest, and most powerful computers available today
• Types of Computers:

  • Microcomputers:
  • Smallest of the computer family, designed for individual users, includes desktop, laptop, tablet-PC, and hand-held models
  • Minicomputers:
  • Designed to meet the computing needs of several people simultaneously in a small to medium-sized business environment, commonly used for data processing, capable of supporting 4 to about 200 simultaneous users
  • Mainframe Computers:
  • Can run multiple different operating systems at the same time, used for bulk data processing like Census and statistics
  • Supercomputers:
• Embedded Computers:

  • Referred to as "computers on a chip"