Podcast
Questions and Answers
What is the primary role of a computer in enhancing human capabilities?
What is the primary role of a computer in enhancing human capabilities?
- To replace human intelligence completely
- To act solely as a storage device for information
- To enhance the ability to perform tasks requiring mental effort (correct)
- To provide entertainment through games and media
Which component is NOT considered hardware in a computer system?
Which component is NOT considered hardware in a computer system?
- Keyboard
- Printer
- Operating System (correct)
- Monitor
What is essential for a computer to function effectively as a mind tool?
What is essential for a computer to function effectively as a mind tool?
- An extensive collection of peripheral devices
- A correctly installed software program (correct)
- A powerful graphics card
- A fast internet connection
What does the 'processing' in a computer's operation refer to?
What does the 'processing' in a computer's operation refer to?
Which of the following is an example of input that a computer can process?
Which of the following is an example of input that a computer can process?
Which of the following statements is TRUE regarding data representation in a computer?
Which of the following statements is TRUE regarding data representation in a computer?
What role do peripheral devices play in a computer system?
What role do peripheral devices play in a computer system?
Which of the following statements about software is correct?
Which of the following statements about software is correct?
How many characters can be represented using 7 bits in the ASCII standard?
How many characters can be represented using 7 bits in the ASCII standard?
Which of the following is NOT a component of a computer system?
Which of the following is NOT a component of a computer system?
Which standard does the ASCII coding method represent?
Which standard does the ASCII coding method represent?
In an 8-bit word length microcomputer, what is the purpose of the 8th bit?
In an 8-bit word length microcomputer, what is the purpose of the 8th bit?
Which of the following correctly defines data?
Which of the following correctly defines data?
Which of the following best describes the function of hardware in a computer system?
Which of the following best describes the function of hardware in a computer system?
What is the definition of information in the context of computer systems?
What is the definition of information in the context of computer systems?
Which component is categorized as an input unit in computer hardware?
Which component is categorized as an input unit in computer hardware?
What is a defining feature of a CD-ROM?
What is a defining feature of a CD-ROM?
Which type of CD allows for data to be recorded only once?
Which type of CD allows for data to be recorded only once?
Which of the following statements about DVDs is true?
Which of the following statements about DVDs is true?
What distinguishes a DVD-RW from a DVD-R?
What distinguishes a DVD-RW from a DVD-R?
What is the primary purpose of a Flash disk?
What is the primary purpose of a Flash disk?
Which characteristic is unique to CD-RW compared to CD-R?
Which characteristic is unique to CD-RW compared to CD-R?
How do data and instructions move within a computer?
How do data and instructions move within a computer?
Which type of DVD is specifically a read-only format?
Which type of DVD is specifically a read-only format?
What is the main function of input devices?
What is the main function of input devices?
Which of the following is an example of a non-impact printer?
Which of the following is an example of a non-impact printer?
What type of device is a mouse classified as?
What type of device is a mouse classified as?
Which component of a computer system is responsible for processing data?
Which component of a computer system is responsible for processing data?
What kind of output device directly generates hard copy materials?
What kind of output device directly generates hard copy materials?
Which of the following devices is NOT commonly classified as an input device?
Which of the following devices is NOT commonly classified as an input device?
Which of the following is a characteristic of impact printers?
Which of the following is a characteristic of impact printers?
What type of device is necessary for graphic input?
What type of device is necessary for graphic input?
What is the primary function of a hard disk?
What is the primary function of a hard disk?
Which characteristic is NOT true for magnetic tape?
Which characteristic is NOT true for magnetic tape?
How is data represented on optical storage devices?
How is data represented on optical storage devices?
What is an advantage of optical storage over magnetic tape?
What is an advantage of optical storage over magnetic tape?
What differentiates a hard disk from a floppy disk?
What differentiates a hard disk from a floppy disk?
Which of the following storage devices is typically used for data archiving?
Which of the following storage devices is typically used for data archiving?
What is the storage capacity range commonly associated with hard disks?
What is the storage capacity range commonly associated with hard disks?
Which statement best describes the access method of magnetic tape?
Which statement best describes the access method of magnetic tape?
What happens when you drag files while holding the Ctrl key?
What happens when you drag files while holding the Ctrl key?
Which method can be used to create a new folder?
Which method can be used to create a new folder?
What is the purpose of the Recycle Bin?
What is the purpose of the Recycle Bin?
What key combination permanently deletes a file without moving it to the Recycle Bin?
What key combination permanently deletes a file without moving it to the Recycle Bin?
What should you do if you cannot delete a file because it is currently in use?
What should you do if you cannot delete a file because it is currently in use?
What occurs when you delete a file from a USB flash drive?
What occurs when you delete a file from a USB flash drive?
Which of the following statements is true about the toolbars provided in folders?
Which of the following statements is true about the toolbars provided in folders?
How can a user delete a file or folder using keyboard shortcuts?
How can a user delete a file or folder using keyboard shortcuts?
Flashcards
Computer definition
Computer definition
An electronic device that accepts input, processes data according to instructions, provides output, and stores data, instructions, and information.
Computer input examples
Computer input examples
Words, numbers, pictures, audio, and process instructions.
Data definition
Data definition
Symbols representing facts and ideas used by a computer.
Computer processing
Computer processing
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Computer output
Computer output
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Computer storage
Computer storage
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Computer hardware
Computer hardware
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Computer software
Computer software
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Data Representation Standards
Data Representation Standards
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ASCII Standard
ASCII Standard
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Bits
Bits
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Computer System Components
Computer System Components
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Data
Data
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Information
Information
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Hardware
Hardware
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Input Unit/Devices
Input Unit/Devices
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Input Device
Input Device
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Keyboard
Keyboard
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Pointing Device
Pointing Device
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Output Device
Output Device
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Display Device
Display Device
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Printer
Printer
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CPU
CPU
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Sound Output
Sound Output
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Magnetic Storage
Magnetic Storage
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Hard Disk
Hard Disk
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Magnetic Tape
Magnetic Tape
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Data Density
Data Density
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Optical Storage
Optical Storage
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Compact Disk (CD)
Compact Disk (CD)
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Optical Storage Advantages
Optical Storage Advantages
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Optical Storage Disadvantages
Optical Storage Disadvantages
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CD-ROM
CD-ROM
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CD-RW
CD-RW
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Copy files
Copy files
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DVD-ROM
DVD-ROM
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DVD-R
DVD-R
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Move files
Move files
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DVD-RW
DVD-RW
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Create a folder
Create a folder
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Flash Disk
Flash Disk
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Delete a file
Delete a file
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Recycle Bin
Recycle Bin
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What is a bus?
What is a bus?
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Empty Recycle Bin
Empty Recycle Bin
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Shift + Delete
Shift + Delete
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File in use
File in use
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Study Notes
Computer Hardware and Software
- Computers are "mind tools" enhancing mental tasks like calculations, sorting, and searching, often more rapidly and accurately than humans.
- A computer system includes the computer, peripheral devices, and software.
- Hardware refers to the physical components (e.g., computer, peripheral devices) that manipulate data.
- Peripheral devices expand the computer's input, output, and storage capabilities.
- Software is a set of instructions that tells a computer how to perform a task.
- Computers become more effective when connected to other computers for information sharing.
- A computer is an electronic device that accepts data as input, processes it according to pre-established instructions or procedures, and produces output.
Definition of Computer
- A computer accepts input data in a prescribed format.
- A computer processes data according to predefined instructions or procedures.
Characteristics of Computer
- Speed: Computers operate at high speed, measured in microseconds, nanoseconds, or picoseconds.
- Storage: Computers store large amounts of information efficiently and quickly access it.
- Accuracy: Computers are very accurate when there isn't an input error or programming error
- Automatic: Computers process information without human intervention after instructions are loaded
- Diligence: Computers perform tasks effectively without fatigue, consistency and maintain accuracy over time
Limitations of Computers
- No IQ: Computers need instructions; they cannot make decisions on their own.
- No feelings: Computers do not have emotions, experiences, or knowledge.
- Not self-directing: Computers are not independent; they perform only the task instructed.
Applications of Computers
- Used in many fields like engineering, entertainment, data processing, operations control, communication systems.
- Medical diagnosis, controlling medical parameters.
- Digital libraries, learning tools.
Data Representation
- Data in a computer system is represented by a flow of an electric current (on/off, 1/0).
- Data is manipulated and stored as a combination of 0s and 1s (binary).
- The basic unit of data storage is the bit, and larger units include the byte and word.
- Bits are organized into larger meaningful units, measured in units like kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), petabytes (PB).
- Various standards represent data (e.g., ASCII).
Data Representation Standards
- Standard codes like ASCII represent characters using bit patterns.
- The number of bits used determines the number of characters a computer system can represent.
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