1 topic: living with a computer plan: Understanding of personal computer. Basic devices of a personal computer Additional devices of the personal computer

TOPIC 7: I/O Devices 1.1. Monitors and LSD displays

• Monitors are very important information display devices. As with a large number of video standards, the types of monitors available today are also diverse.
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• Digital (TTL) monitors.
• TTL is an abbreviation of the English term Transistor Transistor Manic, and in Uzbek it means transistor-transistor manic. The term TTL refers to the standard interpretation of digital microcircuits used in electronics. As always, in digital technology, there are only two signals:
• It has logical states "1" and "0".
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• Monochrome monitors (MDA).
• When talking about TTL-monitors, most often we mean monochrome monitors, whose control signals are formed by MDA or Hercules cards. Monochrome means that the point on the screen can only be bright or black. Ideally, the points should be differentiated by their intensity.
• Digital RGB monitors (CGA, EGA, VGA).
• RGB-digital monitors (Red/Green/Blue - red/green/blue) are mainly designed for connection to the EGA standard card. Such structures also work in monochrome mode, which allows to display a gradation of 16 numbers. Since the advent of personal computers, several standards have changed: MDA (monochrome), CGA (4 colors), EGA (16 colors), VGA (256 colors). Currently, SVGA monitors are used, which can display 16.7 million colors, with the ability to correctly select the screen extension from a number of standard values. A monitor is a piece of computer hardware that displays computer-generated video and graphics data through a video card.
• Monitors are very similar to televisions, but usually display information at a much higher resolution. Unlike televisions, monitors usually sit on a table rather than being mounted on a wall.
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8 SUBJECT: Information processing and transmission

• Processing of information is understood as the creation of another information by performing some action from one information. Information processing is necessary to increase information and change its appearance.
• When working with information, as with matter and energy, processes such as their collection (production), transfer, storage, and transfer from one form to another, the desired form, can be carried out.
•  IV. Consolidation of a new topic

• 1. What actions can be taken on the information?
• 2. Give examples of generating, collecting, and simplifying information.
• 3. Give an example of information collection and processing in the human body.
• 4. Give examples of copying, measuring, breaking information.
• 5. Give examples of methods of long-distance transmission of information.
• 6. Give examples of means of storing information without a computer and on a computer.
• 7. Give an example of media that students get the most information from.
• 8. Give examples of a source of information, means of communication and means of receiving information for a person.
• 9. Give examples of information source, communication tool and information receiver in technology.
• 10. About encoding information
• 11. Being a part of existence, man always feels the influence of existence. We perceive this feeling in the form of various signals (sound, light, electromagnetic, nerve, etc.). Information that has a continuous effect on a person is called analog information.
• 12. A person separates and analyzes a part of analog information in order to process it. In the process of analysis, it transfers information to a view that is convenient for processing. In this, a person uses different symbols. For example, the letters of the alphabet that you know represent sounds that are understandable to humans, and musical notes represent musical sounds. With the help of these symbols, it is easy for a person to write down the speech or music that he hears. So, to process information, a person needs to see it continuously
• while passing. Such a continuous display of information is called discrete information.
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• The process of converting information to another form based on specific rules to facilitate operations on information is called information encoding.
• 13. Coding of information was used by mankind not only to facilitate the performance of actions, but also to keep information confidential. This form of encoding is called encryption.
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