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The computer that process both analog and digital is called:
  • a)
     Analog Computer      
  • b)
     Digital Computer
  • c)
     Hybrid Computer      
  • d)
     Mainframe Computer
  • e)
     None of these
Correct answer is option 'C'. Can you explain this answer?

Amit Khanna answered
The computer that processes both analog and digital is called a Hybrid Computer.

  1. Analog Computer: An analog computer is a type of computer that processes continuous data and performs mathematical calculations using physical quantities such as voltage, current, and resistance. It is suitable for solving complex mathematical equations and simulating real-world systems.

  2. Digital Computer: A digital computer, on the other hand, operates on discrete data and performs calculations using binary digits (0s and 1s). It is commonly used for general-purpose computing tasks, data processing, and executing software instructions.

  3. Hybrid Computer: A hybrid computer combines the features of both analog and digital computers. It can process both continuous analog signals and discrete digital data. This type of computer is often used in scientific and engineering applications where real-time data acquisition and control are required. For example, in weather forecasting, a hybrid computer can process analog weather sensor data and perform digital calculations to predict future weather patterns.


Summary:
A hybrid computer is capable of processing both analog and digital data, making it suitable for applications that require real-time data acquisition and control.

Digital data refers to information that is:
  • a)
     Continuous                
  • b)
     Discrete
  • c)
     Bits                            
  • d)
     Bytes
  • e)
     None of these
Correct answer is option 'B'. Can you explain this answer?

Gargi Roy answered
Digital Data: Discrete Information

Digital data refers to information that is represented using a series of binary digits, or bits. This information can be any type of data, such as text, images, or sound, that has been converted into a digital format. Digital data is discrete, meaning it is finite and can be counted, unlike continuous data which is infinite and cannot be counted.

What are Discrete Data?

Discrete data is a type of data that can only take on certain values. These values are usually whole numbers or values that are counted in integers. For example, the number of students in a class is a discrete value, as it can only take on whole numbers. Discrete data is often represented using a bar graph or a histogram.

Examples of Digital Data

Some examples of digital data include:

- Text documents
- Images
- Audio and video files
- Spreadsheets
- Databases
- Computer programs

How is Digital Data Stored?

Digital data is stored using binary code, which consists of a series of 0s and 1s. These binary digits represent the presence or absence of an electrical charge, which is used to store and process information in a computer. Digital data can be stored on a variety of media, including hard drives, solid-state drives, and flash drives.

Conclusion

In conclusion, digital data refers to information that has been converted into a digital format and is represented using a series of binary digits. This data is discrete, meaning it can be counted and is often represented using a bar graph or a histogram. Digital data is stored using binary code and can be stored on a variety of media.

Which type of signal is represented by discrete values?
  • a)
     Analog                       
  • b)
     Digital
  • c)
     Noisy Signal  
  • d)
     Both [a] and [b]
  • e)
     None of these
Correct answer is option 'B'. Can you explain this answer?

Rhea shah answered
Explanation:

Signals: Signals are electrical or electromagnetic representations of information. These signals can be classified into two types:

- Analog Signals
- Digital Signals

Analog Signals: Analog signals are continuous signals that vary in amplitude and time. These signals are represented by a continuous waveform and can take on any value within a certain range. Examples of analog signals include human voice, music, and natural sounds.

Digital Signals: Digital signals are discrete signals that represent information using a series of binary values. These signals can only take on two values, either a 0 or a 1, and are represented using a series of pulses. Examples of digital signals include computer data, digital audio, and digital video.

Discrete Values: Discrete values are values that are separate and distinct from each other. These values can be compared to continuous values, which can take on any value within a certain range. A digital signal is a discrete signal because it can only take on two values, either a 0 or a 1.

Answer: The type of signal that is represented by discrete values is Digital Signal. Therefore, the correct answer is option 'B'.

The two basic types of signals are analog and ______.
  • a)
     Dialog                        
  • b)
     Digital
  • c)
     Voltage                      
  • d)
     Voltage
  • e)
     None of these
Correct answer is option 'B'. Can you explain this answer?

Shalini Iyer answered
Analog and Digital Signals

Analog and digital signals are two basic types of signals used in communication systems. Let's discuss each of them in detail.

Analog Signals
An analog signal is a continuous signal that varies in time and amplitude. It is a representation of a physical phenomenon such as sound, light, or temperature. An analog signal can take on any value within a range of values. For example, the voltage signal from a microphone is an analog signal.

Analog signals have the following characteristics:
- Continuous: Analog signals are continuous in time and amplitude.
- Infinite values: Analog signals can take on any value within a range of values.
- Susceptible to noise: Analog signals are susceptible to noise and distortion during transmission.

Digital Signals
A digital signal is a discrete signal that takes on a finite number of values. It is a representation of an analog signal that has been converted into a digital form using an analog-to-digital converter (ADC). A digital signal can only take on one of two values, usually represented by 0 and 1. For example, the binary code used in computers is a digital signal.

Digital signals have the following characteristics:
- Discrete: Digital signals are discrete in time and amplitude.
- Finite values: Digital signals can only take on a finite number of values.
- Resistant to noise: Digital signals are resistant to noise and distortion during transmission.

Conclusion
In conclusion, analog and digital signals are two basic types of signals used in communication systems. Analog signals are continuous in time and amplitude and can take on any value within a range of values, while digital signals are discrete in time and amplitude and can only take on a finite number of values. Digital signals are resistant to noise and distortion during transmission, making them more reliable than analog signals.

Which of the following is an example for digital signals?
  • a)
     Voice             
  • b)
     Temperature
  • c)
     Binary bits                 
  • d)
     Pressure
  • e)
     None of these
Correct answer is option 'C'. Can you explain this answer?

Hiral Roy answered
Digital Signals
Digital signals are a type of electrical signals that contain discrete bits of information. These signals are made up of binary bits (0 or 1), which can be interpreted by computers and other digital devices.

Example of Digital Signals
The correct answer to the question is option C, which is binary bits. Binary bits are the building blocks of digital signals and are used to represent all kinds of information in digital form. Some examples of digital signals include:

- Computer data: All data that is processed by a computer is in digital form, including text, images, videos, and music.
- Internet signals: The signals that are sent over the internet are all digital signals, including emails, web pages, and online videos.
- Mobile phone signals: The signals that are sent and received by mobile phones are also digital signals.
- Television signals: The signals that are used to broadcast television programs are digital signals.

Advantages of Digital Signals
There are several advantages of using digital signals over analog signals, including:

- Noise immunity: Digital signals are less susceptible to noise and interference than analog signals, which makes them more reliable.
- Better quality: Digital signals can be compressed and transmitted without losing quality, which means that they can be transmitted over long distances without degradation.
- Flexibility: Digital signals can be easily processed, manipulated, and stored, which makes them more flexible than analog signals.

Conclusion
In conclusion, binary bits are an example of digital signals, which are widely used in modern technology. Digital signals offer several advantages over analog signals, including noise immunity, better quality, and flexibility.

Which one of the following is a digital type of computer?
  • a)
     Micro Computer        
  • b)
     Super Computer
  • c)
     Analog Computer      
  • d)
     Hybrid Computer
  • e)
     None of these
Correct answer is option 'A'. Can you explain this answer?

Ashish Malik answered
Micro Computer
Micro computers are a type of digital computer that is designed for personal or small-scale use. They are the most common type of computer and are found in homes, offices, and schools. Here are some key points about micro computers:
- Micro computers are small in size and are typically used by one person at a time.
- They are versatile and can perform a wide range of tasks, from word processing to gaming.
- Micro computers are based on microprocessors, which are integrated circuits that contain the functions of a central processing unit.
- Examples of micro computers include desktop computers, laptops, tablets, and smartphones.
In contrast, analog computers use continuous electrical signals to represent data, while hybrid computers combine the features of digital and analog computers. Supercomputers are high-performance computers used for complex calculations, simulations, and data analysis. However, they are also digital computers.

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