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This encompasses all of the technology that we use to collect, process, protect and store
information. It refers to hardware, software (computer programs), and computer networks.
This encompasses all of the technology that we use to collect, process, protect and store information. It refers to hardware, software (computer programs), and computer networks.
Computer Education
This concept involves transfer and use of all kinds of information. It is the foundation of
economy and a driving force of social changes in the 21st century.
This concept involves transfer and use of all kinds of information. It is the foundation of economy and a driving force of social changes in the 21st century.
ICT or Information and communication Technology
a device used to input, process, stored and retrieve data.
a device used to input, process, stored and retrieve data.
Computer
an electronic device operates under the control of a set of instructions that are stored in its memory unit.
an electronic device operates under the control of a set of instructions that are stored in its memory unit.
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These processes work together and repeat over and over.
These processes work together and repeat over and over.
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Information processing cycle
Information processing cycle
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Components of a Computer System
Components of a Computer System
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the amount of time taken by the computer in
accomplishing a task of an operation.
the amount of time taken by the computer in accomplishing a task of an operation.
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The time taken by a computer to perform a particular task is far less than that taken by than a human being. Different computers are classified on the basis of their speed by comparing their MIPS (Million Instructions Per Second).
The time taken by a computer to perform a particular task is far less than that taken by than a human being. Different computers are classified on the basis of their speed by comparing their MIPS (Million Instructions Per Second).
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refers to the degree of correctness and exactness of operations performed by a computer.
refers to the degree of correctness and exactness of operations performed by a computer.
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In the absence of bad programming, computers do not commit errors and are capable of handling complex instructions accurately.
In the absence of bad programming, computers do not commit errors and are capable of handling complex instructions accurately.
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If the data fed into a computer is error free, it is likely to produce inaccurate results.
If the data fed into a computer is error free, it is likely to produce inaccurate results.
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Computer systems are non-respondent to human factors like fatigue, tiredness or boredom. Therefore, they are more likely to work repeatedly and efficiently. In case of any failure in a computer.
Computer systems are non-respondent to human factors like fatigue, tiredness or boredom. Therefore, they are more likely to work repeatedly and efficiently. In case of any failure in a computer.
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Computers are capable of performing all levels of tasks-simple or complex. Therefore, they can be used in any area-science, technology, business, finance, accounts, and communications and so on.
Computers are capable of performing all levels of tasks-simple or complex. Therefore, they can be used in any area-science, technology, business, finance, accounts, and communications and so on.
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It refers to the capacity of a computer to store data and programs.
It refers to the capacity of a computer to store data and programs.
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This is intended for personal use, as opposed to the server, which is used by a larger number of people simultaneously, from different locations.
This is intended for personal use, as opposed to the server, which is used by a larger number of people simultaneously, from different locations.
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This is used by individuals who have the
need to travel with a computer or simply use them for aesthetic reasons when computing power is not an issue.
This is used by individuals who have the need to travel with a computer or simply use them for aesthetic reasons when computing power is not an issue.
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This more closely resemble a personal computer when it comes to data input.
This more closely resemble a personal computer when it comes to data input.
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a convenient small sized computer. It easily connects to mobile phones and can prove a good solution for less demanding users. As the
name suggests, it is a device that fits in the user’s palm.
a convenient small sized computer. It easily connects to mobile phones and can prove a good solution for less demanding users. As the name suggests, it is a device that fits in the user’s palm.
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a portable electronic device used for distant
communication.
a portable electronic device used for distant communication.
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a convenient small sized computer. It easily connects to mobile phones and can prove a good solution for less demanding users. As the
name suggests, it is a device that fits in the user’s palm.
a convenient small sized computer. It easily connects to mobile phones and can prove a good solution for less demanding users. As the name suggests, it is a device that fits in the user’s palm.
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an optical disc used for data storage.
an optical disc used for data storage.
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The standard capacity of a CD is ____. CD-R is
used for reading.
The standard capacity of a CD is ____. CD-R is used for reading.
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an optical disc which is, due to the larger capacity (about 4.7 GB), mostly used for video storage.
an optical disc which is, due to the larger capacity (about 4.7 GB), mostly used for video storage.
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the successor to DVD, is an optical disk storage, it comes in different capacities, depending on how many layers it has and the capacity of each layer.
the successor to DVD, is an optical disk storage, it comes in different capacities, depending on how many layers it has and the capacity of each layer.
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a type of flash memory used to store data in
digital cameras, cell phones, MP3 players etc.
a type of flash memory used to store data in digital cameras, cell phones, MP3 players etc.
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a data storage device. It belongs to the type of flash memory that remembers data, even when not under voltage i.e. they do not need electric
power to maintain data integrity.
a data storage device. It belongs to the type of flash memory that remembers data, even when not under voltage i.e. they do not need electric power to maintain data integrity.
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Study Notes
Information Technology
- Encompasses all technology used for collecting, processing, protecting, and storing information.
- Includes hardware, software, and computer networks.
- Foundation of the economy and a driving force of social change in the 21st century.
Computers
- Electronic devices that operate under the control of instructions stored in their memory.
- Process information through a cycle of input, processing, storage, and output.
Computer System Components
- Speed: Measured in MIPS (Million Instructions Per Second), reflecting how quickly a computer completes tasks.
- Accuracy: Computers are highly accurate, but errors can occur due to faulty data input or programming.
- Reliability: Computers are not affected by human factors such as fatigue, making them reliable for repeated tasks.
- Versatility: Computers handle a diverse range of tasks, from simple to complex, across various fields.
- Storage Capacity: Refers to the computer's ability to store data and programs.
Types of Computers
- Personal Computer (PC): Intended for personal use.
- Laptop: Portable computer designed for personal use with a focus on portability and aesthetics.
- Tablet: Convienient, small-sized computer resembling a personal computer.
- Smartphone: A portable electronic device used for communication.
- Netbook: A small, convenient computer that easily connects to mobile phones.
Data Storage
- CD (Compact Disc): Optical disc used for data storage with a standard capacity.
- DVD (Digital Versatile Disc): Optical disc primarily used for video storage due to its larger capacity.
- Blu-ray Disc: Successor to DVD, available in various capacities based on the number of layers and capacity per layer.
- SD Card (Secure Digital Card): Flash memory used for data storage in devices like digital cameras, cell phones, and MP3 players.
- USB Flash Drive: Flash memory that retains data even when not powered, ensuring data integrity.
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