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Computer Science (First Exam 2027)

What Are the Main Components of a CPU (ALU; Control Unit; Registers)?

Understand how the ALU, control unit, and registers work together during the fetch-decode-execute cycle in IB Computer Science hardware questions.

A1.1 Computer hardware and operation

What's the Difference Between the Instruction Register, Program Counter, MAR, MDR, and Accumulator?

Understand how the instruction register, program counter, MAR, MDR, and accumulator differ and interact in the fetch-decode-execute cycle for IB exams.

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Every question IB students actually ask.

Computer Science (First Exam 2027)

What Are the Main Components of a CPU (ALU; Control Unit; Registers)?

What's the Difference Between the Instruction Register, Program Counter, MAR, MDR, and Accumulator?

MYP Subjects

Computer Science (First Exam 2027)

What Are the Main Components of a CPU (ALU; Control Unit; Registers)?

What's the Difference Between the Instruction Register, Program Counter, MAR, MDR, and Accumulator?

What Do the Address Bus, Data Bus, and Control Bus Each Do?

What's the Difference Between a Single-Core, Multi-Core, and Co-Processor?

What Does a GPU Do and Why Is It Good for AI/Gaming/Simulations?

What's the Difference Between a CPU and a GPU? (HL)

How Do CPUs and GPUs Work Together on a Task? (HL)

What's the Difference Between RAM, ROM, and Cache Memory (L1, L2, L3)?

What Is a “Cache Hit” vs a “Cache Miss”?

What Is the Fetch-Decode-Execute Cycle?

How Do Memory and Registers Interact Through the Buses During Fetch-Decode-Execute?

What Is Pipelining in a Multi-Core CPU? (HL)

How Do Multiple CPU Cores Work Independently and in Parallel? (HL)

What's the Difference Between an SSD and an HDD?

What's the Difference Between Internal and External Secondary Storage?

What Is Data Compression and What's the Difference Between Lossy and Lossless Compression?

What Is Run-Length Encoding?

What's the Difference Between SaaS, PaaS, and IaaS in Cloud Computing?

How Do You Convert Binary to Decimal and Hexadecimal?

How Do You Convert Between Binary and Hexadecimal Directly?

How Is Binary Used to Store Text, Images, Audio, and Video?

What Are Logic Gates (AND; OR; NOT; NAND; NOR; XOR; XNOR)?

How Do You Construct a Truth Table From a Logic Circuit?

How Does a Truth Table Relate to a Boolean Expression?