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CPU is Central Processing Unit--the core part of the computer system (as opposed to such periferal devices as keyboards and printers). Whatever operating system you have--Windows 7, for example--is programmed into the CPU. Memory consists of one or more pieces such as chips that hold information that is being processed.
Wiki User
∙ 9y ago
Wiki User
∙ 14y agoMain memory simply remembers. No functions like adding or subtracting are performed there. The memory is used to store not only data but programs. To add two numbers, they must first be fetched from memory into the processor, added then put back in memory somewhere. The same occurs for every function like getting a key from the keyboard. Even this simple function may require thousands of instructions which occur in the CPU and the resulting key code then stored in main memory.
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What is bus cycle in a microprocessor?
Bus cycle is a single transaction between the main memory and the CPU.
What is the difference between main and auxiliary memory?
The major difference between main memory and auxiliary memory is that main memory is directly accessed by CPU but the auxiliary memory is not accessed by the CPU directly.For this the data is first transferred to main memory from auxiliary memory and then from main memory the data is transferred to the CPU for further processing. Answered By: Richa Singh
Where is the operating system stored in the computer for quick access by microprocessor?
in main memory
How does microprocessor keep instraction in main memory?
It doesn't. Main memory is usually volatile (that is, it "forgets" when power is removed). Most microprocessor systems keep a "bootloader" which is a special type of program located in memory that is available when power is applied. These days, that is usually Flash memory. So, a typical microprocessor boot sequence is that the microprocessor places a known starting address on the Flash's address lines. The data that is returned is then executed. This data forms a basic program which copies from the Flash memory into main memory. Control then shifts to the main memory when the Flash has been completely read. There may be additional aspects to the booting process, such as the second-stage boot loader which is responsible for loading the operating system, usually from a disk drive rather than Flash.
Difference between backing storage and main memory?
Main memory in a computer is storage that will be erased when a computer is turned off. Backing storage is memory that will save information when the computer shuts down.
The main difference between sdram and dram is that dram is?
The main difference between Synchronous random access memory, SDRAM and Dynamic Random Access Memory, DRAM is that SDRAM is synchronous while DRAM is asynchronous. As such, SDRAM is efficient in retrieving and storing data than DRAM.
What is auxiliary memory give an example of auxiliary memory?
The major difference between main memory and auxiliary memory is that main memory is directly accessed by CPU but the auxiliary memory is not accessed by the CPU directly.For this the data is first transferred to main memory from auxiliary memory and then from main memory the data is transferred to the CPU for further processing. Some examples of auxiliary memory would be disks, external hard drives, USB drives, etc.
What is relationship between microprocessor and microcomputer?
In Basic: A microprocessor is the main "brain" of a micro computer. The processor is the toll that allocates the task the computer has todo.
What is difference between l1 cash and l2 cash in computers?
Answering L1 and L2 are levels of cache memory in a computer. If the computer processor can find the data it needs for its next operation in cache memory, it will save time compared to having to get it from random access memory. L1 is "level-1" cache memory, usually built onto the microprocessor chip itself. For example, the Intel MMX microprocessor comes with 32 thousand bytes of L1. L2 (that is, level-2) cache memory is on a separate chip (possibly on an expansion card) that can be accessed more quickly than the larger "main" memory. A popular L2 cache memory size is 1,024 kilobytes (one megabyte).
What are the Uses of Cache a very high speed memory?
Cache is a high-speed memory device that is placed between a microprocessor and a system memory. A Microprocessor usually can process data at a much faster rate than what the system memory can provide. If this disparity isn't handled, we will end up with a microprocessor that's idling most of the time, because it has to wait on main system memory to provide the (or cosnume) data. With a cache, which could operate at a speed near the processor to shuttle data back and forth between processor and memory. Cache memory relies on a concept in computer science called locality of reference. This concept stipulates that when the processor accesses a piece of data, it is highly likely that it will access data that are also in the same locale in memory. A cache subsystem will fetch the requested data and those around to anticpate the next processor request.
What is the difference between polyethylene and polyester?
what is the main difference between polyethylene and polyesters what is the main difference between polyethylene and polyesters
What are registers in assembly language?
Registers are memory locations on the microprocessor itself (not in main memory). In RISC architectures generally most operations (add, multiply, etc) must take there input from registers and write their output to a register. Since registers are located directly on the microprocessor, they represent the fastest form of memory in the computer, and also the type of memory available in the least quantity.
