SSS Two Computer Scheme of Work

SSS TWO CURRICULUM IN COMPUTER STUDIES

S/N	TOPICS	CONTENT	OPERATIONAL OBJECTIVES	TEACHING AIDS
1.	Central processing unit (CPU)	1. Central processing unit a. Arithmetic logic unit(ALU) b. control unit 2. Functions of a. arithmetic logic unit . control unit	students should be able to: i. Define CPU ii. List the components of the CPU iii. State the functions of the ALU and control unit	Computer Charts
2.	Memory Unit	1.Types of memory unit a. Primary/main/ internal memory b. Secondary/ auxiliary/external memory 2. Description of a. Primary memory b. secondary memory 3. difference between primary and secondary memory 4. units of storage 5. conversion from one unit to another 6. comparison of auxiliary storage devices under speed, size and technology	students should be able to: i. State the types of memory ii. Describe primary memory and secondary memory iii. State the differences between primary and secondary memory iv. state the units of storage v. convert from one unit to another vi. list of the auxiliary storage devices vii. compare auxiliary storage devices	Computer memory chips, floppy disk, Flash drives, hard drives, etc
3.	Logic circuit I ( standard single logic gate)	1. Definition of logic gate 2. Types of logic gate 3. Symbols of each logic gate 4. Input/ app for signals for AND, NOT, OR gate 5. Truth table construction for AND, NOT, OR gate 6. Equation for AND, NOT, OR gate 7. Uses of logic Gates	students should be able to: i. Define logic gate ii. List types of logic gate iii. Identify symbols of each logic gate iv. Recognise and state the input and output signal of each logic gate v. Write simple equation for each logic Gates vi. Construct table for each logic gate vii. State the differences in the standard logic Gates.	Computer, Chart, textbooks
4.	Logic Circuit II (Alternative logic gates)	Description of alternative logic gates 1. Types of automated logic gate 2. Symbols of each logic gate; NAND, NOR gates 3. Truth table construction for NAND, NOR gates 4. Input and output signal for NAND, NOR gates 5. Equation for NAND, NOR gates 6. Uses of logic Gates 7. Construction of simple comparator	Students should be able to: i. Describe alternative logic gate ii. List Types of alternative logic gate iii. Identify symbols of each Gate iv. Recognise and state the input and output signals v. Construct truth table for each Gate vi. Write symbol equation for each date vii. State the uses of logic gate viii. Construct a simple comparator	Computer, Chart, textbooks
5.	Computer data conversion	1. Definition of a. Register b Address c. Bus 2. types of registers 3. difference between register and main memory 4. step in the data fetch execution cycle 5. factors affecting speed of data transfer	students should be able to: i. Define the term register, address and bus ii. List the types of register and their functions iii. Differentiate between register and main memory iv. Outline the steps in data fetch execution cycle	Charts, Computer, Text material
6.	Concept of computer files	1. Definition of some basic terms: a. Compute file b. Record c. Field d. data item 2. Types of data item: a. Numeric b. Alphabetic c. Alphanumeric 3. File structure organisation 4. Types of organisation a. Serial b. Sequential c. Index d. Random 5. Methods of accessing files: a. Serial access b. Sequential access c. Random access 6. file classification a. Master file b. Transaction file c. Reference file 7. criteria for classifying file: a. nature of content b. file organisation C. Storage medium	Students should be able to: i. List basic operations on file ii. Create a sequential file iii. Access a sequential file iv. Read and display content of file v. Describe file insecurity vi. State effects of insecurity on files vii. State methods for file security viii. State differences between computer files and manual files ix. State the advantages of computerized files over manual filing system x. Limitations of computer filing system	Charts br Computer Text material
7.	Handling computer files	1. Basic operations of computer files a. Creation b. Deletion c. Retrieval, etc 2. Steps involved in creating sequential files using BASIC file processing statements 3. Steps involved in assessing sequential files using BASIC processing statements. 4. Basic statements to read and display EXAMFILE 5. Effects of file security 6. Methods of file security 7. Difference between computer files and manual files 8. Advantages of computerized files 9. Limitations of computerized files	students should be able to: i. List basic operations on files ii. Create sequential file ii. Access sequential file iii. Read and display content iv. Describe file insecurity v. State effects of file insecurity vi. State method of file security vii. State advantages of computerized files over manual filing system.	Computer, Charts
8.	Word Processing	1. Definition of word processing and word processor 2. Examples of word processor Microsoft Word Word Perfect corel wordperfect wordstar 3. Application areas of word processing Offices Publishing Journalism Education 4. Facilities available in a word processor Type document Edit document < Store document Move copy paste, etc 5. Features of word processor close documents Editing Formatting Justification search and replace, etc	Students should be able to: i. Define word processing and word processor ii. list examples of word processor iii. list application areas of word processing iv. state facilities available in word processor v. open word processor vi. list features in word processor vii. using word processor to fine-tune text using its features	Computer, word processing packages
9.	Systems Development Life Cycle	1. Definition of system development life cycle 2. Description of systems development life cycle 3. Stages in system development life cycle preliminary study feasibility study investigative study Analysis Design Implementation Maintenance study review 4. description of each stage of system development life cycle	students should be able to: i. Define system development life cycle ii. Describe system development life cycle iii. Draw a system development life cycle iv. List stages in system development life cycle V. Describe briefly each of the stages involved	Charts, text materials
10.	Program Development	1. Definition of program 2. characteristics of good program Accuracy Readability Maintainability Efficiency, etc 3. Precautions: do not rush no step skipping follow order of Execution, etc 4. steps involved in program development problem definition problem analysis Flowcharting desk checking, etc 5. description of each stages mentioned above 6. examples of interpreted programs and compiled programs	students should be able to: define program state the characteristics of a good program state precautions to be taken when writing program list steps involved in program development describe each of the steps in program development list examples of interpreted and compiled programs draw a flow diagram on how compiler and interpreter works	Charts, Computer, text materials
11.	Algorithm and flowchart	1. Definition of algorithm and flowchart 2. Functions of algorithm Characteristics of algorithm a. Finite b. Effective c. Unambiguous 3 Write algorithm for a. computing average of given set of numbers b. printing out 10 odd numbers, etc 4. Flowchart symbols: input and output, process, decision, etc 5. use of each flowchart symbols 6. flowchart diagrams for solving a given problem	students should be able to: i. Define algorithm ii. State the functions of algorithm iii. State and describe the function of an algorithm iv. Write a simple algorithm for problem solving v. List flowchart symbols vi. State what each symbol stands for vii. Draw flowchart for solving the main problems	Charts Computer text materials
12.	BASIC programming II	1. Built-in functions: SQR INT SIN ABS, etc BASIC notation 2. BASIC program to find: Square root of numbers within a given range find the cosine of known values find the tangent of known values plot sine curves plot cosine curves	Students should be able to: Identify basic built-in functions List the built-in functions State the application of each built-in functions Write BASIC notation of algebraic expressions using built-in-functions. Write simple BASIC programs using built-in functions	Charts Computer text materials
13.	Internet	1. Definition of Internet 2.Some basic terms: Browse Browser chat room cyber cafe Cyberspace Download Email HTML Http Internet service provider Intranet Upload Protocol Web browser Web page Types of browsers Mozilla Google Chrome, etc 3. Features of an Internet Browser Menu bar Title bar Address bar, etc 4. Types of Internet Services E-mail Discussion group Video conferencing FTP WWW, etc 5. Benefits of Internet	Students should be able to: i. Define Internet ii. Define basic internet terms iii. List types of an internet web browser iv. State features of an internet web browser v. List the types of internet services vi. State the Benefits of internet	Internet Ready Computer
14.	Electronic Mail Email	1. Meaning and definition of Email 2. Email Services 3. Creating an Email Account 4. Email Address 5. Procedure for sending an Email 6. Chatting 7. Advantages of Email	Students should be able to: i. State the full meaning of email ii. Define email iii. Create an email Account iv. Send an email v. Chat using email vi. State the advantages of email	Internet ready computer
15.	Spreadsheet	1. Definition of spreadsheets 2. Examples of Spreadsheet Applications. 3. Uses of Spreadsheet Application 4. Loading and exiting spreadsheets. 5. Creating, saving and retrieving Spreadsheet files.	Students should be able to: i. Define spreadsheet ii. List some spreadsheets Application iii. State the uses of spreadsheets Application iv. Load and exit spreadsheet application v. create, save and retrieve spreadsheet files	Computer Charts