What is Computer Science
Computer Science is the study of computers, information, and computing concepts. Computer science deals with the theory of computation, algorithms, computational problems, and the design of computer systems including hardware, software, and applications. Computer science is also about teaching a computer what to do; it's the study of how a computer thinks.
Generally, Computer Science encompasses the study of all computer technology, both hardware, and software.
Disciplines in Computer Science
- Cybersecurity
- Quantum Computing
- Machine Learning
- Computational Physics
- Data Management
- Web Development
- Database Design
- Parallel Programming
- iOS Development
- Mobile Development
- Memory Systems
- Digital Image/Sound
- Applied Mathematics
- Networks and Administration
- Computer Architecture
- Cryptography
- Computer Engineering
- Artificial Intelligence
- Microprogramming
- Bioinformatics
- Computer Programming
- Software Development
- Software Systems
Careers in Computer Science
- Computer Freelancer
- IT Consultant
- Web Development
- Multimedia Programmer
- Cybersecurity Consultant
- Information Systems Manager
- Database Administrator
- Games Developer
- Systems Analyst
- Technical Writer
Importance of Computer Science in Modern Life
- Makes life easier and more comfortable
- Assists in problem-solving
- Used in communication
- Entertains users
- Applied in medical research
- Controls machines, both large and small, which were previously controlled by humans
- Performs tasks like calculations, reading, writing, and music playback
- Plays a vital role in fields like engineering, marketing, medicine, banking, finance, etc.
Computers
A computer is an electronic device that accepts data as input, processes the data, stores it, and gives out meaningful information as output.
A computer is a machine that works with information. Computers can quickly create information, organize it, and store it.
Classes of Computers
- Analog Computers
- Digital Computers
Analog Computers
In analogue devices, numbers are represented by analogous physical quantities, such as distance or electronic voltage.
Examples of Analog Computers
- Mercury Thermometer
- Clocks
- Watches
- Dial Speedometer
Digital Computers
In digital devices, quantities are represented in digits.
Examples of Digital Computers
- Digital Speedometers
- Digital Clocks
- Thermometers
Computing Process
- Input
- Processing
- Output
- Storage
Input Devices
Input devices are peripherals used to enter data into computer memory or to give instructions to the computer to enable it to perform a specific job.
Examples of Input Devices
- Keyboard
- Mouse
- Trackball
Output Devices
Output devices handle the information that comes out of the computer. They are activated by instructions within the program or instructions provided by the users.
Examples of Output Devices
- Monitors
- Printers
- Speakers
Storage Devices
Since a computer may not hold data that must be stored and accessed, auxiliary storage is very important. It enables the computer to store information held in RAM before the computer is turned off.
Examples of Storage Devices
- Floppy Disk
- Hard Disk
- CD-ROM
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