Podcast
Questions and Answers
What is a two nibble word called?
What is a two nibble word called?
- Kilobyte
- Nibble
- Byte (correct)
- Bit
How many bytes are in a Kilobyte (KB)?
How many bytes are in a Kilobyte (KB)?
- 1024 Bytes (correct)
- 1000 Bytes
- 512 Bytes
- 2048 Bytes
Which type of memory allows the CPU to perform read/write operations directly?
Which type of memory allows the CPU to perform read/write operations directly?
- RAM (correct)
- External Hard Drive
- Flash Drive
- ROM
How many Megabytes are in a Gigabyte (GB)?
How many Megabytes are in a Gigabyte (GB)?
What is the unit for 1024 Terabytes (TB)?
What is the unit for 1024 Terabytes (TB)?
Which type of memory is typically non-volatile?
Which type of memory is typically non-volatile?
What are the three main categories of software mentioned in the text?
What are the three main categories of software mentioned in the text?
Which component is known as the brain of the computer system?
Which component is known as the brain of the computer system?
Why is software necessary for a computer to function?
Why is software necessary for a computer to function?
What distinguishes RAM from ROM in a computer system?
What distinguishes RAM from ROM in a computer system?
Which component acts as an interface between the user and the computer?
Which component acts as an interface between the user and the computer?
What are the four physical components of a computer system mentioned in the text?
What are the four physical components of a computer system mentioned in the text?
What is the purpose of specially designed braille keyboards?
What is the purpose of specially designed braille keyboards?
What is the function of an output device in a computer system?
What is the function of an output device in a computer system?
Where is data entered temporarily stored in a computer system?
Where is data entered temporarily stored in a computer system?
Which type of printer is commonly used to get output in physical (hardcopy) form?
Which type of printer is commonly used to get output in physical (hardcopy) form?
What is the purpose of a braille display monitor?
What is the purpose of a braille display monitor?
In which type of industries are 3D-printers commonly being used?
In which type of industries are 3D-printers commonly being used?
What is the main function of system software?
What is the main function of system software?
Which category of software includes operating systems and device drivers?
Which category of software includes operating systems and device drivers?
What is the role of system utilities in a computer system?
What is the role of system utilities in a computer system?
Which software is essential for other programs to work on a computer?
Which software is essential for other programs to work on a computer?
In what way does application software differ from system software?
In what way does application software differ from system software?
Which type of software is directly responsible for knowing how to operate different hardware components?
Which type of software is directly responsible for knowing how to operate different hardware components?
What is the main characteristic of customised software?
What is the main characteristic of customised software?
Which of the following is an example of user-defined software?
Which of the following is an example of user-defined software?
What distinguishes Free and Open Source Software (FOSS) from proprietary software?
What distinguishes Free and Open Source Software (FOSS) from proprietary software?
Which software type is Microsoft Windows classified as?
Which software type is Microsoft Windows classified as?
What kind of software is Skype classified as?
What kind of software is Skype classified as?
In what way are websites similar to customised software?
In what way are websites similar to customised software?
Study Notes
Input Devices
- Specially designed braille keyboards are available to help the visually impaired enter data into a computer
- Data can be entered through voice, for example, using Google voice search to input search strings
- Data entered through input devices is temporarily stored in the main memory (RAM) of the computer system
Output Devices
- Output devices receive data from a computer system for display, physical production, etc.
- Examples of output devices include monitor, projector, headphone, speaker, and printer
- A braille display monitor is useful for visually challenged individuals to understand textual output generated by computers
- Printers are commonly used to get output in physical (hardcopy) form
- 3D-printers are used to build physical replicas of digital 3D designs, especially in manufacturing industries to create prototypes of products
Measurement Units for Digital Data
- A byte is an 8-bit word, for example, 01000110, 01111100, 10000001, etc.
- Bytes are grouped together to make larger units of measurement, including:
- KB (Kilobyte) - 1 KB = 1024 Bytes
- MB (Megabyte) - 1 MB = 1024 KB
- GB (Gigabyte) - 1 GB = 1024 MB
- TB (Terabyte) - 1 TB = 1024 GB
- PB (Petabyte) - 1 PB = 1024 TB
- EB (Exabyte) - 1 EB = 1024 PB
- ZB (Zettabyte) - 1 ZB = 1024 EB
- YB (Yottabyte) - 1 YB = 1024 ZB
Types of Memory
- Computers have two types of memories: primary memory and secondary memory
- Primary memory (RAM) is volatile, meaning its contents are lost when the power is turned off
- Primary memory is of two types: i) Random Access Memory (RAM) and ii) Read-Only Memory (ROM)
Software
- Software acts as an interface between human users and hardware
- Types of software include:
- System software
- Programming tools
- Application software
- System software, such as operating systems, provides basic functionality to operate a computer
- Software can be proprietary (purchased from vendors), free and open-source, or freeware
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Description
Learn about the classification of software into system software, programming tools, and application software. Understand the role of system software in providing basic functionality to operate a computer and interact with hardware.
