COMPUTER ICT: OPERATING SYSTEM J S 2 WEEK 7
COMPUTER ICT: OPERATING SYSTEM J S 2 WEEK 7
WEEK 7
DATE: 21st – 25th October, 2024
CLASS: JSS 2
SUBJECT: INFORMATION TECHNOLOGY
LESSON TITLE: OPERATING SYSTEM
SUBTITLE (IF ANY):
PERIOD: 1& 2
DURATION: 80 minutes
COMPUTER ICT: OPERATING SYSTEM J S 2 WEEK 7
LEARNING OBJECTIVES: By the end of the lesson, learners should be able to
- Define operating system
- Give examples of operating system
KEY VOCABULARY WORDS: executive, debug, interface
RESOURCES AND MATERIALS: computer installed with OS, interactive CD tutorial, comprehensive computer studies for basic education by A.s. Omotuyole.
BUILDING BACKGROUND/ CONNECTION TO KNOWLEDGE: students are familiar with operating system.
CONTENT:
OPERATING SYSTEM
An operating system is a program that acts as an interface between the software and the computer hardware.
- It is an integrated set of specialised programs that are used to manage overall resources and operations of the computer.
- It is specialised software that controls and monitors the execution of all other programs that reside in the computer, including application programs and other system software.
OBJECTIVES OF OPERATING SYSTEM
- To make a computer system convenient to use in an efficient manner
- To hide the details of the hardware resources from the users
- To provide users a convenient interface to use the computer system
- To act as an intermediary between the hardware and its users and making it easier for the users to access and use other resources
- To manage the resources of a computer system
- To keep track of who is using which resource, granting resource requests, according for resource using and mediating conflicting requests from different programs and users
- To provide efficient and fair sharing of resources among users and programs
Characteristics of Operating System
- Memory Management — keeps tracks of primary memory i.e. what part of it is in use by whom, what part is not in use etc. and allocates the memory when a process or program requests it.
- Processor Management — allocates the processor(CPU) to a process and deallocates processor when it is no longer required.
- Device Management — keeps track of all devices. This is also called I/O controller that decides which process gets the device, when, and for how much time.
- File Management — allocates and de-allocates the resources and decides who gets the resources.
- Security — prevents unauthorized access to programs and data by means of passwords and similar other techniques.
- Job accounting — keeps track of time and resources used by various jobs and/or users.
- Control over system performance — records delays between request for a service and from the system.
- Interaction with the operators — The interaction may take place via the console of the computer in the form of instructions. Operating System acknowledges the same, does the corresponding action and informs the operation by a display screen.
- Error-detecting aids — Production of dumps, traces, error messages and other debugging and error-detecting methods.
- Coordination between other software and users — Coordination and assignment of compilers, interpreters, assemblers and other software to the various users of the computer systems.
NUMBER BASE SYSTEM
STRATEGIES AND ACTIVITIES:
Activity 1: learners will answer correctly questions that will be ask by the teachers on the previous topic .
Activity 2 : learners will be lead to define operating system
Activity 3: learners will give examples of operating system
Activity 4 : teacher will correct learners mistake and to the learners opinion.
ASSESSMENT (EVALUATION)/WRAP-UP:The following questions will be asked to determine the level of understanding of the topic by the learners.
- What do you understand by the word operating system
- Give 5 examples of operating system
ASSIGNMENTS: Mention 2 types of operating system
HOD/VP’S COMMENTS AND ENDORSEMENT:
