14/05/2026
*WAEC DIGITAL TECHNOLOGY*
1(c)
- Row 1: A=1, B=0, C=1, D=1
A·B = 0, Ā·B̄ = 1, C+D = 1, Z = 1
- Row 2: A=1, B=1, C=1, D=0
A·B = 1, Ā·B̄ = 0, C+D = 1, Z = 0
- Row 3: A=1, B=0, C=0, D=1
A·B = 0, Ā·B̄ = 1, C+D = 1, Z = 1
- Row 4: A=1, B=1, C=0, D=0
A·B = 1, Ā·B̄ = 0, C+D = 0, Z = 0
- Row 5: A=1, B=0, C=1, D=1
A·B = 0, Ā·B̄ = 1, C+D = 1, Z = 1
(2a)
The Internet is a worldwide network of interconnected computers used for sharing information and communication.
(2b)
[TABULATE]
=INTRANET=
(i) Used within an organization only.
(ii) Access is restricted to employees.
=INTERNET=
(i) Used by authorized outsiders and members of an organization.
(ii) Access is given to external users such as customers or suppliers.
(2c)
(i) HTTP: HyperText Transfer Protocol
(ii) IP: Internet Protocol
(iii) LAN: Local Area Network
(iv) TCP: Transmission Control Protocol
(2d)
(i) TCP/IP (Transmission Control Protocol/Internet Protocol)
(ii) HTTP (HyperText Transfer Protocol)
2(d)
(i) TCP/IP (Transmission Control Protocol/Internet Protocol)
(ii) FTP (File Transfer Protocol)
3(a) A register is a small, high-speed temporary storage location within the CPU that holds data, instructions, or addresses currently being processed.
3(b)
(i) Special purpose register — Program Counter (PC)
(ii) General purpose register — Accumulator
3(c)
A special purpose register is designed to perform a specific function within the CPU (e.g. storing the address of the next instruction), whereas a general purpose register can be used to store any data or intermediate results during processing.
3(d)
(i)
Register — Extremely fast and located inside the CPU
Main Memory — Slower than registers and located outside the CPU
(ii)
Register — Very small storage capacity (holds only a few bits or bytes)
Main Memory — Much larger storage capacity (holds gigabytes of data)
*WAEC DIGITAL TECHNOLOGY*
*NUMBER FOUR*
(4a)
(i) Process symbol / Rectangle
(ii) Input and Output symbol / Parallelogram
(iii) Decision symbol / Diamond
(iv) Flow line / Arrow
(v) Terminal symbol / Start–Stop symbol / Oval
(4b)
(i) It is used for processing data or carrying out an operation.
(ii) It is used for entering input or displaying output.
(iii) It is used for making decisions or testing conditions.
(iv) It is used for showing the direction of flow of a program.
(v) It is used for indicating the start or end of a program/process.
(5a)
An integrated software package is a collection of related application programs bundled together as a single unit. These programs (such as a word processor, spreadsheet, and database) share a common user interface and allow for the easy transfer of data between them.
(5b)
(i)EXT (Extend Selection Mode): When this mode is active, you can use the arrow keys to extend the current selection of cells. Instead of moving the cursor to a new cell, the program "stretches" the highlighted area from the original cell to the new one.
(ii)OVR (Overtype Mode): In this mode, any new character you type replaces (overwrites) the existing character at the cursor position. This is the opposite of the standard Insert mode, where new text is pushed in between existing characters.
(5c)
(i)Insert Mode: The default mode where new text is inserted at the cursor, pushing existing text to the right.
(ii)Overtype (or Overwrite) Mode: A mode where new text replaces the existing text character-by-character as you type.
