In a computer, instructions are mainly stored in . A Registers B Memory C Keyboard D CPU

Let's be honest, it's the cache.

CPU Cache (Cache MeMoney) is a temporary memory between the CPU and memory, which has a smaller capacity than memory but is exchanged faster. The data in the cache is a small part of the memory, but this small part is about to be accessed by the CPU in a short period of time, and when the CPU calls a large amount of data, it can be called directly from the cache without memory, thus speeding up the read speed. It can be seen that adding a cache to the CPU is an efficient solution so that the entire internal memory.

Cache + memory) becomes a storage system with both high speed and large capacity of memory. Caching has a significant impact on CPU performance, mainly due to the order in which the CPU exchanges data and the bandwidth between the CPU and the cache.

The working principle of caching is that when the CPU wants to read a piece of data, it first looks it up from the cache, and if it finds it, it reads it immediately and sends it to the CPU for processing; If it is not found, it is read from the memory at a relatively slow speed and sent to the CPU for processing, and at the same time, the data block where the data is located is called into the cache, so that the entire block of data can be read from the cache in the future, and the memory does not need to be called.

It is this read mechanism that makes the CPU read cache have a very high hit rate (most CPUs can reach about 90%), which means that 90% of the data that the CPU will read next time is in the cache, and only about 10% needs to be read from memory. This greatly saves the CPU time to read the memory directly, and also makes the CPU almost free to wait when reading data. In general, the order in which the CPU reads data is cached first and then memory.

Instructions may also be input from keypads, or from other pipes, or stored in various types of memory, loaded into the CPU when executed, stored in the CPU instruction register (IR) and decoded for execution.

Summary: Instructions that are not executed in various types of memory (b) - in (b).

The instruction being executed is in the instruction register in the CPU, but not in the general register - in a specific (a) in (d).

Yaga, Yaga, of course, is memory

— Did you put the command in the keyboard ==?

d. Memory parts.

The storage media that make up the memory are mainly semiconductor devices and magnetic materials. The smallest unit of memory is a bistable semiconductor circuit or a CMOS transistor or magnetic material that can store a binary**.

A memory cell is made up of several storage elements, and then a memory is formed by many memory cells. Memory structureIn the MCS-51 series microcontroller, the program memory and data memory are independent of each other, and the physical structure is also different.

Memory

It is generally used to store data, just like the memory cells in the brain mainly record what the eyes see, so they are memory components.

The answer should be selectedd

Of course, it's the memory part of the choice D

What kind of questions are you talking about, are you a college exam question, it's really difficult enough.

Memory. Select C.

In the computer, the operation requirements and operand addresses are represented by binary digits, which are called opcodes and address codes respectively, and the whole instruction is stored in the memory in the form of binary encoding. In this case, the memory is the memory.

It is used to temporarily store computing data in the CPU and to exchange data with external memory such as hard disks. As long as the computer is running, the CPU will transfer the data that needs to be calculated into the memory for calculation, and when the operation is completed, the CPU will send the result out, and the operation of the memory also determines the stable operation of the computer.

Answer]: B memory is the main memory used to temporarily store the data and calculation results of the processing program and the scumbag, and directly exchange information with the processor of the fiber beam hole, which is composed of semiconductor integrated circuits. So the answer is B.

b.Address registers.

c.Instruction registers.

d.Stack change pointer registers.

Correct Answer: a

During the execution of the instruction, there is a missing item in the instruction register that is searched for ().

a.The instruction that is currently being executed.

b.The number of operands of the current instruction.

c.The address of the directive.

d.The address of the operand.

Correct Fu Tangerine Answer: a

Answer]:B In order to ensure that the program can be executed continuously, the CPU must have some means to determine the address of the next search order. This is what the program counter does, so it is often called the program counter.

When a program is transferred, the end result of the transfer instruction execution is to change the value of the PC, which is the address of the next instruction to be executed. In some machines, it is also called the PC as the instruction pointer fiber lp.