L-1.3:Various General Purpose Registers in Computer Organization and Architecture | Summary and Q&A

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August 7, 2019
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L-1.3:Various General Purpose Registers in Computer Organization and Architecture

TL;DR

This video discusses the different types of registers used in computer organization, including address register, data register, accumulator, program counter, instruction register, temporary register, input register, and output register, and explains how their sizes are determined.

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Questions & Answers

Q: What is the purpose of an address register in computer organization?

The address register is used to specify the memory location from where data needs to be fetched. It stores the address where the data is stored and is then passed on to the memory for retrieval.

Q: How is the size of a data register determined?

The size of a data register is determined by the size of the word it can store. In this example, the word size is 16 bits, so the data register is also 16 bits in size.

Q: What does the program counter store in computer organization?

The program counter stores the address of the next instruction to be fetched and executed. It points to the memory location where the next instruction is stored.

Q: How is an instruction represented in the instruction register?

The instruction is represented in the instruction register by its opcode (which indicates the operation to be performed) and operand (which specifies the location of the data). The instruction register is 16 bits in size to accommodate the opcode and operand.

Q: What is the purpose of a temporary register in computer organization?

A temporary register is used to store temporary data during the execution of a program. It is often used to hold intermediate results before transferring them to other registers or memory.

Q: How does the input register differ from the output register?

The input register is used to receive data from input devices, such as a keyboard, while the output register is used to send data to output devices, such as a printer or monitor. They serve as temporary storage before the data is processed or displayed.

Summary & Key Takeaways

  • Registers discussed include address register, data register, accumulator, program counter, instruction register, temporary register, input register, and output register.

  • The size of a register is determined by the number of bits needed to represent the data it stores.

  • Address register is used to specify the memory location to fetch data, program counter stores the address of the next instruction, and instruction register stores the fetched instruction.

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