SSS 2 Computer Notes
SSS Two Computer Studies/ICT
Lesson Notes have been prepared in the following SSS 2 key topics. Click any topic to read the full note.
Computer Files
- What files are and how data is represented and stored.
- Basic data units and how devices handle them.
Mastering Your Data (Handling Computer Files)
- Create, delete, retrieve, copy, view, and update files confidently.
- Practical file management tips for students.
Word Processing
- Meaning of word processing and word processors.
- Common features and application areas.
Spreadsheets
- Cells, rows, columns, and basic operations.
- Uses in budgeting, analysis, and reporting.
The Central Processing Unit (CPU)
- Roles of the Control Unit, ALU, and registers.
- How instruction cycles drive computer operations.
The Memory Unit
- Primary vs. secondary memory; units of storage.
- Comparing auxiliary storage by speed, size, and tech.
Logic Circuits I (Standard Single Logic Gates)
- AND, NOT, OR gates: symbols, truth tables, and uses.
- Relating Boolean expressions to gate behavior.
Logic Circuits II (Alternative Logic Gates)
- NAND and NOR: symbols, truth tables, and equations.
- Building simple comparators and more complex logic.
Computer Data Conversion
- Registers, addresses, and buses—what they do.
- Fetch–execute cycle and factors affecting data transfer speed.
System Development Life Cycle (SDLC)
- Stages: preliminary & feasibility study, analysis, design, implementation, maintenance, review.
- Activities and goals of each stage.
Program Development
- Qualities of good programs: accuracy, readability, maintainability, efficiency.
- Steps: problem definition, analysis, design, flowcharting, desk checking, etc.
Algorithms and Flowcharts
- Definitions, characteristics, and common symbols.
- Writing algorithms and drawing flowcharts for typical tasks.
BASIC Programming II (Built-in Functions)
- Using SQR, INT, SIN, ABS and more.
- Short programs to calculate values and plot simple curves.
Internet
- Key terms: browser, download/upload, protocol, cyberspace.
- Common services: WWW, email, discussion groups, video conferencing, FTP.
Electronic Mail (E-mail)
- Meaning of email and common services.
- Creating an account, composing & sending messages, attachments, pros & cons.
what of the third term scheme we did this is our first term
ReplyDeletePls, the note under program development is not opening?
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DeletePls the note for CPU is not opening
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DeletePlease the notes on logic circuit is not opening
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ReplyDeleteThanks for your kind words. Working on data processing
DeleteI really do not understand you
ReplyDeleteThere is no java console input 1 and 2
ReplyDeleteThere is no java control statement 1 and 2 also what happened 😳.
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