Instruction fetch - Study guides, Class notes & Summaries
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OCR GCSE COMPUTER SCIENCE PAPER 1 TEST QUESTIONS AND ANSWERS.
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what is the purpose of the CPU? 
to process data by following the fetch-decode-execute cycle, it's incharge of searching, sorting, calculating and decision making 
 
 
 
what happens at the fetch stage? 
the CPU fetches data and instructions from RAM and then stores them in it's own temporary memory called registers 
 
 
 
 
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what happens at the decode stage? 
the CPU under...
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What are the steps of an R-Format instruction in the MIPS datapath? - correct answer 1. Fetch instruction from instruction memory 2. Tie bits to appropriate locations 3. Decode rs1, rs2, fetch contents 4. ALU
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What are the steps of an R-Format instruction in the MIPS datapath? - correct answer 1. Fetch instruction from instruction memory 
2. Tie bits to appropriate locations 
3. Decode rs1, rs2, fetch contents 
4. ALU operations 
5. Write data to rd 
 
What's the steps for load format in MIPS datapath? - correct answer 1. Calculate actual memory address. 
2. Send ALU result on address bus to memory. 
3. Send m...
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Computer Science OCR j277 Questions & Correct Answers | Grade A+
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What is the CPU? 
: Central Processing Unit 
Processes all information 
What is the fetch-execute cycle? 
: 1. Fetch The next instruction from memory 
2. Decode the Instruction 
3. Get data if needed 
4. Execute the instruction (repeat) 
What is the ALU? 
: Arithmetic logic unit. Part of the CPU that carries out two types of operations: 
calculations & decisions. 
What is the CU? 
: control unit. It manages the instructions. 
2 
What is cache? 
: Temporary memory. Small amount of high-speed RAM...
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Benjamin Mitchell TTU-ISQS Exam 3; Questions & Answers 100% Solved
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Benjamin Mitchell TTU-ISQS Exam 3; 
Questions & Answers 100% Solved 
What is the fetch-decode-execute cycle? Correct answer-It's the basic operation cycle of 
a computer. It is the process by which a computer: 
-FETCHES the next instruction in the program 
- DECODES the instruction to determine which operation to perform 
-EXECUTES the instruction 
___________ is the systems development methodology that focuses on iterative stages of 
defining, building, and releasing features of a system (...
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CEA201 FPTU Exam with Guaranteed Accurate Answers
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Which characteristic refers to whether memory is internal or external? 
Select one: 
a. Location 
b. Hierarchy 
c. Physical 
d. Access - correct answer a 
 
Which characteristic refers to whether memory is internal or external? 
Select one: 
a. Location 
b. Hierarchy 
c. Physical 
d. Access - correct answer a 
 
Whenever the data is not found in the cache memory it is called? 
Select one: 
a. Cache found 
b. Cache line 
c. Cache miss 
d. Cache hit - correct answer c 
 
List the possible state...
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COP4600 Final Combined Correct Questions & Answers!!
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What pieces of hardware are in the CPU? - ANSWER Registers, ALU, and control unit 
 
Hardware which serves as the CPUs memory. There are special and general purposed of these - ANSWER Registers 
 
Hardware which does arithmetic and logical computations - ANSWER ALU 
 
Hardware which tracks state/status. Also controls other components - ANSWER Control unit 
 
Instruction cycle responsible for loading the instruction - ANSWER Fetch 
 
Instruction cycle responsible for finding the opcode/operands o...
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COP4600 Exam 1 Questions and Answers Latest 2024/2025 (Verified)
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COP4600 Exam 1 Questions and Answers Latest 2024/2025 (Verified) Hardware which tracks state/status. Also controls other components: Control unit 
5. Instruction cycle responsible for loading the instruction: Fetch 
6. Instruction cycle responsible for finding the opcode/operands of the instruction and interpreting it: Decode 
7. Instruction cycle responsible for carrying out the instruction: Execute 
8. Protected instructions can only be executed in a ____________: Protected 
state 
9. Legacy b...
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COP4600 Exam 1 Questions And Answers Already Graded A+
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What pieces of hardware are in the CPU? - Registers, ALU, and control unit 
Hardware which serves as the CPUs memory. There are special and general purposed of these - 
Registers 
Hardware which does arithmetic and logical computations - ALU 
Hardware which tracks state/status. Also controls other components - Control unit 
Instruction cycle responsible for loading the instruction - Fetch 
Instruction cycle responsible for finding the opcode/operands of the instruction and interpreting it - 
Dec...
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CSC258 Midterm2 || Already Passed.
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Ch.5 correct answers Data Path 
 
Instruction Execution correct answers • PC ® instruction memory, fetch instruction• 
 
 Register numbers ® register file, read registers• 
 
 
Use ALU to calculate 
 • Arithmetic result 
 * Memory address for load/store 
 • Branch comparison 
 
• Access data memory for load/store• 
 PC <- target address or PC + 4 
 
Single Cycle data path correct answers does an instruction in one clock cycle 
 
Multiplexor correct answers alternate data sour...
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COP4600 Final Combined
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What pieces of hardware are in the CPU? - Answer- Registers, ALU, and control unit 
 
Hardware which serves as the CPUs memory. There are special and general purposed of these - Answer- Registers 
 
Hardware which does arithmetic and logical computations - Answer- ALU 
 
Hardware which tracks state/status. Also controls other components - Answer- Control unit 
 
Instruction cycle responsible for loading the instruction - Answer- Fetch 
 
Instruction cycle responsible for finding the opcode/opera...
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