 программное обеспечение набор команд, которые "понятны" компьютеру



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There are more special keys above the alphabetical keys; of these the function keys(please see next image) are used for different functions, depending on situation and the program currently being used. The manual for these functions is usually available in the manual for the program.

To the left and right of the function keys, you will find the following additional keys: Esc (Escape), HomeEnd, Page Up, Page Down, Num Lock.

Mouse 

computer mouse is a pointing device (hand control) that detects two-dimensional motion relative to a surface.

Output devices:

Types of Monitor:

  • Cathode Rey Tube(CRT)
  • Liquid Cristal Display(LCD)
  • Type of printer:

  • Dot matrix printer
  • Inkjet printer
  • Laser printer

Data presentation in computer systems

The bit is a basic unit of information in computing and digital communications. A bit can have only one of two values, and may therefore be physically implemented with a two-state device. These values are most commonly represented as either a 0 or 1.

The byte is a unit of digital information that most commonly consists of eight bits. 

1 Bit = 0 or 1

1 byte = 8 bits

Units of information

Questions:

  • Who is the father of computer?
  • What is the most common program used to read PDF files?
  • What is the term used for the intangible set of instructions that tell the computer what to do?
  • Which program is loaded on the very first computer?
  • What type of software works with the operating system to help you complete specific types of work or tasks?
  • Using a specific system computers can convert numbers, letters, and symbols into combinations of ones and zeros. What is the name for this system?


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