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Which of the memory has shortest access time?

The processor registers! Relatively, they are very small (a register on an Intel 32-bit processor is only 4 bytes large!) but they are very fast. Programs use them to store the part of data they are working on and some memory addresses.


Is an operating system responsible for managing processor time and memory allocation?

The processor time is a function of the processor. The memory allocation is a function of the operating system.


What is memory access time?

The time required by a processor to access data or to write data from and to memory chip is referred as access time.


What is the Memory access time?

The time required by a processor to access data or to write data from and to memory chip is referred as access time.


Which one is faster controller or processor why?

controller performs its operations faster than processor because controller has memory in it so it takes less time cycles for fetching of address or data from memory where as in processor memory is connected externally so time taken will be more to perform its operations.


What measures the time required to deliver an item from memory to the processor?

chronological base of classification of computer


Your processor runs at 100 percent over 50 percent of the time do you need a new or upgraded processor you have 1.5 Gigs ram with a pent 3 processor at 80 Gig memory?

Very rarely should your processor reach 100% utilization. If you are looking at it running at full capacity 50% of the time, it is definitely time for an upgrade.


Do MacBook have video cards?

Macs do have video cards. For example the current range of iMacs have: ▪ 20-inch and 24-inch model with 2.66GHz processor has the NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main memory ▪ 24-inch model with 2.93GHz processor has one of the following: NVIDIA GeForce GT 120 graphics processor with 256MB of GDDR3 memory or NVIDIA GeForce GT 130 graphics processor with 512MB of GDDR3 memory or ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory ▪ 24-inch model with 3.06GHz processor has one of the following: NVIDIA GeForce GT 130 graphics processor with 512MB of GDDR3 memory or ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory


Give two reasons why caches are useful?

It minimizes the miss match between the main memory and the processor Actually, there is one reason for a cache to exist: speed. A cache exists to speed up the time that the processor takes to obtain a bit of data. Typically, main memory is many times slower than the processor - in modern computers, it can be 1000 times slower. So, caches are made up of memory more expensive and faster than main memory, to store parts of main memory in, in the hopes that the data the processor wants will be available in the cache.


Physical address and logical address?

A logical (or virtual) address is a reference to a memory location independent of the current assignment of data to memory; a translation must be made to a physical address before the memory access can be achieved. A relative address is the address expressed as a location relative to some known point, usually the beginning of the program. A physical address, or absolute address, is an actual location in main memory.


How exactly does a processor work?

Keeping it simple: the CPU has a register (just like a memory) called the accumulator. It does all the work. It has other registers to keep addresses which normally increase by one each time they are used (but you can order it changed). Into the accumulator you bring in data (bytes from memory). there you can add other data, compare it, copy it to memory, shift it right or left. The compare allows you to jump around in memory ... that's the (boolean) logic of computers. They are very simple, but very fast. All the good stuff is in the programs.


Where is frequently accessed data stored?

Frequently accessed data is often stored in a cache memory, which is a smaller, faster type of memory that sits between the main memory (RAM) and the processor. Caching helps improve performance by allowing the processor to access frequently used data more quickly than if it had to retrieve it from the main memory every time.