Topic 1: Data Representation
1.1 Numbers & Shifts
Task: Convert denary -18 to 8-bit Two's Complement.
Task: Apply a Logical Left Shift by 3 to 0000 1101.
1.2 Text & Media
Topic 2: Computer Systems
2.1 The CPU Cycle
The instruction is decoded by the Control Unit (CU).
The Program Counter (PC) increments by 1.
Memory address is copied from PC to MAR.
The ALU executes logical or mathematical operations.
2.2 Hardware & Soft
Topic 3: Networks & Protocols
Topology & Hardware
Reliability of Mesh vs Star?
Hardware used to connect LANs?
Protocols & Layers
SMTP / IMAP layer?
Ethernet / Wi-Fi layer?
Topic 4: Algorithmic Tracing
x = 0
FOR i = 1 TO 3:
FOR j = 1 TO 2:
x = x + (i * j)
NEXT j
NEXT i
FOR i = 1 TO 3:
FOR j = 1 TO 2:
x = x + (i * j)
NEXT j
NEXT i
| i | j | x |
|---|---|---|
| - | - | 0 |
Topic 5: Algorithms & Logic
5.1 Logic Gates
| A | B | C | Q |
|---|---|---|---|
| 0 | 0 | 0 | |
| 0 | 1 | 0 | |
| 1 | 1 | 0 | |
| 1 | 1 | 1 | |
| 0 | 0 | 1 |