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| ANALYSIS OF KCSE COMPUTER STUDIES QUESTIONS & REVISION KITS |
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Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL FREE KCSE PAST PAPERS 2018: COMPUTER STUDIES FORM 1 QUESTIONS AND ANSWERS
This category comprises of KCSE 2018 computer studies questions and answers for form that featured in that year.
Question 1
Topic: Introduction to computers (Classification of Computers)
State two reasons for the increased use of laptop computers in government offices. (2 marks)
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Question 2
Computer network technicians prefer to use command-line based operating system when configuring networks. State three reasons for the preference. (3 marks)
Topic: The Operating System (HCI - Human Computer Interface)
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Question 3
State three measures that should be put in place in a computer laboratory to safeguard users’ health. (3 marks)
Topic: Introduction to Computers (The Computer Laboratory)
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Question 4
State three ways in which barcode readers may be used in schools. (3 marks)
Topic: The Computer System (Hardware/Input Devices)
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Question 5
State three advantage of flat panel monitors over cathode ray tube monitors as used in computers. (3 marks)
Topic: The Computer System (Hardware/Output Devices)
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Question 6
State three possible reasons for the extinction of daisy wheel printers in the market. (3 marks)
Topic: The Computer System (Hardware/Output Devices)
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Question 7
State three ways in which an operating system secures a computer system. (3 mark)
Topic: The Operating System (Functions of the Operating System)
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Question 8
A law firm prefers to use hard copy output over soft copy output when handling documents for legal matters. State two reasons for this preference. (2 marks)
Topic: The Computer System (Hardware/Output Devices)
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Question 11
Distinguish between real-time operating system and distributed operating system. (3 marks)
Topic: The Operating System (Types of the Operating System) also check relevance in form 3 under Data processing (electronic data processing modes)
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Analysis of form 1 questions in kcse 2018 computer studies paper 1Weight of form 1 marks vs total marks in KCSE 2018 computer studies paper 1
How marks were distributed across all form 1 topics
There are only three topics in form 1. Namely:
Advice to Users
Put more emphasis on those topics that carried bulky marks especially I/O devices under the computer system topic.
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Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL JUNE 2019, FORM 1 COMPUTER STUDIES MIND BLOWING QUESTIONS AND ANSWERS1. Write the following acronyms in full
2. State advantages of the keyboard over a mouse
3. Which input devices is recommended for use by blind people.
4. Distinguish between magnetic and optical scanners
Magnetic scanners capture data using magnetic technology, while optical scanners capture data using a directed beam of light.
5. State two advantages of using a light pen over other input devices
6. State 3 factors to consider when purchasing/selecting input devices.
Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL 1. inputThis is the ability for a computer to accept data either through input devices such as scanners, keyboards, mice and others or through information retrieved from storage devices. Input of data is a main function because all other functions depend on the incoming data for processing and output.  Functions of a Computer 2. processingProcessing and storage are sometimes broken down as separate basic functions of a computer. However, looking at this critical idea keenly, we notice that processing and storage are sometimes inseparable this is because processing devices rely heavily on storage devices vis a vis. Processing is an act where a computer converts raw meaningless piece of information called data into a more meaningful piece of information. This is normally done with a closer help of primary storage devices such as the RAM, and special types of memories such as the registers, buffers and cache memory. Processing is a main function of a computer because of the conversion, manipulation of numeric data and logical decisions. 3. OutputThis is an act for a computer to display the result of a processing activity. This can be done using output devices such as the monitor, printer, plotter, speakers etc.
The functions of a computer system cannot be complete without the output, simply because it gives a feedback of the result for the computer user to digest, change, amend, store or print. Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL What is a laser printer?This is an electrostatic technology powered printer that uses a laser beam of light to create characters on a piece of paper.  Laser Printer How a laser printer works
RELATED LINKS ..Advantages of laser printers
Disadvantages of laser printers
Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL wHAT ARE SECONDARY sTORAGE DEVICES?Also called auxiliary storage devices or persistent storage media are computer hardware devices involved in the storage of data, permanently. These devices can be categorized as:  Floppy disk Related links ..
13/4/2019 DRAW A DIAGRAM SHOWING THE FUNCTIONAL UNITS OF A COMPUTER HARDWARE. NAME THE UNITSRead Now Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL DRAW A DIAGRAM SHOWING THE FUNCTIONAL UNITS OF A COMPUTER HARDWARE. NAME THE UNITS
DIAGRAM SHOWING THE FUNCTIONAL UNITS OF A COMPUTER HARDWARE.
01. INPUT DECICES
These are devices that enter data into a computer and also covert data from human readable form to machine readable form.
Examples of these devices include:
02. Central Processing unit
The CPU-Central Processing Unit is a device made from a collection of integrated circuits. Its main functions are:
03. Primary Storage
These are devices that provide temporary storage for task that are to and from processing. They include:
04. Secondary Storage
These are devices that permanently store data in the computer or they are portable. They include:
Related Searches:
05. Output Devices
These are devices that display activities in the CPU to the user and converts information from machine readable form to human readable form. These devices include:
12/4/2019 Matching computer generations with the technology used to manufacture their processorsRead Now Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL
In the evolution of computers, each of the passing computer generations had its own technology which was an improvement of the previous technology. Below is a match of computer generations with their processor technology and what each of the processors were capable of.
01. FIRST GENERATION COMPUTERS
They used thermionic valves
This is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied. as a thermionic tube or thermionic valve uses the phenomenon of thermionic emission of electrons from a heated cathode and is used for a number of fundamental electronic functions such as signal amplification and current rectification. [Source: https://en.wikipedia.org/wiki/Vacuum_tube] 02. SECOND GENERATION COMPUTERS
They used transistors
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. How does a transistor work ? By turning a small input current into a large output current, the transistor acts like an amplifier. But it also acts like a switch at the same time. When there is no current to the base, little or no current flows between the collector and the emitter. Turn on the base current and a big current flows. [Source: https://www.quora.com/What-is-the-use-of-transistors-in-a-circuit#] 03. THIRD GENERATION COMPUTERS
They used Integrated Circuits (ICs)
A collection of transistors make up an Integrated Circuit An integrated circuit (IC), sometimes called a chip or microchip, is a semiconductor wafer on which thousands or millions of tiny resistors, capacitors, and transistors are fabricated. An IC can function as an amplifier, oscillator, timer, counter, computer memory, or microprocessor. A particular IC is categorized as either linear (analog) or digital, depending on its intended application. [Source: https://whatis.techtarget.com/definition/integrated-circuit-IC] 04. FOURTH GENERATION COMPUTERS
They used very large scale integrated (VLSI)
VLSI is an acronym that represents Very Large Scale Integrated. A collection of Integrated Circuits (ICs) Make up VLSI An Integrated Circuit is the circuit in which all the Passive and Active components are fabricated onto a single chip. Initially the Integrated Chip could accommodate only a few components. As the days passed, the devices became more complex and required more number of circuits which made the devices look bulky. Instead of accommodating more circuits in the system, an Integration technology was developed to increase the number of components that are to be placed on a single chip. This Technology not only helped to reduce the size of the devices but also improved their speed. Depending upon the number of components (Transistors) to be integrated, they were categorized as SSI, MSI, LSI, VLSI, ULSI & GSI. Small Scale Integration (SSI):
Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL What is an operating system
An operating system is a collection of integrated computer programs that provide recurring services to other programs or to the user of a computer.
These services consist of disk and file management, input/output activities, storage resources, diverse support services and control of various resources.
Ssmengg.edu.in describes an operating system as a program that acts as an intermediary between a user of a computer and the computer hardware. it further adds "the purpose of an operating system is to provide an environment in which a user can execute programs and the primary goal of an operating system is thus to make the computer system convenient to use."
Linux Logo
Tutorial point describes an Operating System (OS) as an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.
Some popular Operating Systems include Linux Operating System, Windows Operating System, VMS, OS/400, AIX, z/OS, etc. factors to consider when choosing an operating system
31/3/2019 STATE REASONS WHY IS RECOMMENDED TO HAVE STANDARD FURNITURE IN THE COMPUTER LABORATORYRead Now Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL STATE REASONS WHY IS RECOMMENDED TO HAVE STANDARD FURNITURE IN THE COMPUTER LABORATORYWhat it means by standard furnitureThese are tables, chairs and shelves that have the quality required to set them up in the computer laboratory for use of computers and computer users. There are two common types of furniture that can be found in the computer laboratory namely:
Why standard furniture?
Image Source: Pinterest
29/3/2019 STATE FOUR CHARACTERISTICS OF COMPUTERS THAT MAKES THEM SMARTER THAN HUMAN BEINGSRead Now Join our Whatsapp Notifications and Newsletters touch here COURTESY OF ATIKA SCHOOL STATE FOUR CHARACTERISTICS OF COMPUTERS THAT MAKES THEM SMARTER THAN HUMAN BEINGS1. THEY ARE EFFICIENT
this means they can achieve maximum productivity with minimum wasted effort or expense.
2. THEY ARE ACCURATE
computers rarely make mistakes and when they make, its as a result of poor programming by humans or the mistakes are too small thus negligible.
3. THEY ARE FAST IN PROCESSING
computers are very fast in processing, a no-match with humans.
4. THEY ARE RELIABLE
computers can be trusted to deliver results. Humans are almost unpredictable and have no boundaries or principles
5. THEY CAN WORK IN HAZARDOUS AREAS
no humans can work in hazardous places. Computers can
6. THEY DON'T NEED SUPERVISION
they don't need you to supervise them. they need software to control them
7. THEY MAY HAVE A LARGER MEMORY AND STORAGE WHICH IS QUICKER TO ACCESS THAN HUMANS
Most computational neuroscientists tend to estimate human storage capacity somewhere between 10 terabytes and 100 terabytes, though the full spectrum of guesses ranges from 1 terabyte to 2.5 petabytes. (One terabyte is equal to about 1,000 gigabytes or about 1 million megabytes; a petabyte is about 1,000 terabytes.) Meanwhile a 64 bit Linux empowered computer can have a maximum of 256 Terabytes. At the 2015 Flash Memory Summit in California, Samsung unveiled the largest capacity hard drive in the world. It's a 2.5-inch solid state drive (SSD) that can hold 16 terabytes of data (15.36TB, to be exact).
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