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Describe each of the following computer file management activities: (i) sorting; (ii) searching; (ii) retrieval. (6 marks)June/July 2020
(i) Sorting: Sorting is the process of organizing files in a specific order, such as by name, size, or date. This can be done manually by a user, or automatically by the computer using a specified sorting criteria. Sorting can help users more easily locate and access specific files, and can also helRead more
(i) Sorting: Sorting is the process of organizing files in a specific order, such as by name, size, or date. This can be done manually by a user, or automatically by the computer using a specified sorting criteria. Sorting can help users more easily locate and access specific files, and can also help to keep files organized and easier to manage.
(ii) Searching: Searching is the process of locating a specific file or group of files within a larger collection of files. This can be done using keywords or other search criteria, and can be performed using a search function built into the computerβs operating system or a separate search tool. Searching can be useful for quickly finding a specific file or group of files when a user is not sure where it is stored.
(iii) Retrieval: Retrieval is the process of accessing and reading a file or group of files. This can be done using a file management tool or application, such as a file explorer or a word processor. Retrieval allows a user to view and use the contents of a file, and may also involve copying or moving the file to a different location.
See lessState two classes of computer software.June/July 2020
System software is software that manages the hardware and software resources of a computer, and includes operating systems, device drivers, and utility programs. It is responsible for controlling and coordinating the various hardware and software components of a computer, and enables the computer toRead more
System software is software that manages the hardware and software resources of a computer, and includes operating systems, device drivers, and utility programs. It is responsible for controlling and coordinating the various hardware and software components of a computer, and enables the computer to perform its various functions. Examples of system software include Microsoft Windows, Linux, and macOS.
Application software is software that performs specific tasks for the user, such as word processing, spreadsheet management, or photo editing. It is designed to help users accomplish a wide range of tasks, and is typically tailored to a specific industry or type of work. Examples of application software include Microsoft Office, Adobe Photoshop, and QuickBooks.
See lessExplain βcomputer softwareβ.June/July 2020
Computer software, also known as software or computer programs, is a set of instructions that tell a computer what to do. It is stored on the computer's hard drive or other storage media, and is used to perform a wide range of tasks, such as running applications, managing data, and controlling compuRead more
Computer software, also known as software or computer programs, is a set of instructions that tell a computer what to do. It is stored on the computerβs hard drive or other storage media, and is used to perform a wide range of tasks, such as running applications, managing data, and controlling computer hardware.
There are two main types of computer software: system software and application software. System software is software that manages the hardware and software resources of a computer, and includes operating systems, device drivers, and utility programs. Application software is software that performs specific tasks for the user, such as word processing, spreadsheet management, or photo editing.
See lessDescribe the use of each of the following computer devices: (i) Keyboard; (ii) mouse; (ii) scanner. (6 marks)June/July 2020
(i) Keyboard: A keyboard is a device that is used for inputting text and data into a computer. It consists of a set of keys that allow a user to type letters, numbers, and symbols, as well as perform various functions such as navigating and editing text. Keyboards are commonly used for writing documRead more
(i) Keyboard: A keyboard is a device that is used for inputting text and data into a computer. It consists of a set of keys that allow a user to type letters, numbers, and symbols, as well as perform various functions such as navigating and editing text. Keyboards are commonly used for writing documents, sending emails, and entering data into databases.
(ii) Mouse: A mouse is a device that is used for inputting data into a computer by moving a cursor on the screen. It consists of a small handheld device with one or more buttons that a user can press to perform various actions, such as clicking, double-clicking, and dragging. Mice are commonly used for navigating and interacting with graphical user interfaces, such as those found on desktop computers and laptops.
(iii) Scanner: A scanner is a device that is used to digitize physical documents or images. It consists of a flatbed or sheet-fed device that a user can place a document or image on, and a sensor that captures the image and converts it into a digital format. Scanners are commonly used for creating electronic copies of documents, creating digital images of photos and artwork, and converting physical documents into editable text formats.
See lessExplain two functions of Information Communication Technology (ICT), in an organization. (4 marks)June/July 2020
Communication: ICT can be used to facilitate communication within an organization, such as through email, instant messaging, and videoconferencing. This can help employees stay connected and collaborate effectively, even if they are physically located in different locations. Data storage and managemRead more
Outline three reasons for sizing a solar installation.craft1 electrical June/July 2020
There are several reasons for sizing a solar installation, which refers to the process of determining the appropriate size and capacity of the solar panels and other components in a solar power system: Energy needs: Sizing a solar installation involves determining the amount of electricity that willRead more
There are several reasons for sizing a solar installation, which refers to the process of determining the appropriate size and capacity of the solar panels and other components in a solar power system:
State three possible causes and remedies for a solar battery when state of charge is low during a normal sunny day.craft1 electrical June/July 2020
There are several possible causes for a solar battery to have a low state of charge (SOC) during a normal sunny day, including: Insufficient solar panel size: If the solar panel system is not large enough to meet the electrical demand of the battery, the battery may not receive enough charge to mainRead more
There are several possible causes for a solar battery to have a low state of charge (SOC) during a normal sunny day, including:
To remedy a low SOC in a solar battery during a normal sunny day, the following steps may be taken:
List three types of maintenance done on each of the following: (i) P.V module; (ii) solar battery,(6 marks)craft1 electrical June/July 2020
(i) PV module: The following are some types of maintenance that may be done on a photovoltaic (PV) module: Cleaning: PV modules should be kept clean to ensure that they are able to operate at their maximum efficiency. This may involve cleaning the module's surface to remove dust, dirt, and other debRead more
(i) PV module: The following are some types of maintenance that may be done on a photovoltaic (PV) module:
(ii) Solar battery: The following are some types of maintenance that may be done on a solar battery:
State any two factors that determine the choice of an electrical wiring system.(4 marks)craft1 electrical June/July 2020
Voltage and current requirements: The voltage and current requirements of the electrical load will determine the size and type of wire that is needed. For example, higher voltage and current requirements will require larger and more robust wire. Distance: The distance between the power source and thRead more
Describe two insulation resistance tests that are carried out in a completed solar installation.craft1 electrical June/July 2020
Insulation resistance tests are used to assess the quality of the insulation in a solar installation. These tests are typically carried out in a completed solar installation to ensure that the insulation is in good condition and is providing adequate protection against electrical shock and other hazRead more
Insulation resistance tests are used to assess the quality of the insulation in a solar installation. These tests are typically carried out in a completed solar installation to ensure that the insulation is in good condition and is providing adequate protection against electrical shock and other hazards.
There are several types of insulation resistance tests that may be carried out in a solar installation: