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- An MMU (memory management unit) generates physical address.
- A CPU (central processing unit) generates a logical address.
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What kind of memory addresses does a memory management unit generate?
- An MMU (memory management unit) generates physical address. - A CPU (central processing unit) generates a logical address.
What characteristics of the motherboard architecture determine the amount of memory that a CPU can address?
RAM and the memory cache
How does CPU generate logical address?
Lets take the scenario of CPU MMU (memory management unit) Physical Memory.CPU generates the logical address as Page number + Page offset.Of course this address will point to some physical address.Page number is for the index in page table (for base address).The base address + offset is sent to MMU which is mapped to the corresponding physical page.
What is the difference between Harvard and Princeton computer architecture?
Harvard architecture : _________ ______ | code | | | | memory | | CPU | <-----> |_________| | | | | ----------- | data | | memory | ---------------- the CPU generated address is either point to code or data memory. Princeton arhitecture: data memory <--------> CPU <-------> code memory in this the CPU generated address will point to both the data and code. for this some internal operation are take place to point to either data or code. answered by prasad. mail prasad40613@gmail.com
Which 3 computer devices generates heat?
The folowing 3 devices generate heat:hard disks, memory, and CPU's
What is the memory's addressibility?
HI I am Ahtarva,The addressibility is how many bits does that particular processor or micro-controller's architecture use to specify the address of a memory location in the memory. For example if someone say that addressibility is 8 bit then your memory address contains 8 bits and at maximum you have 2^8 different memory locations (or say memory addresses in your device). Here 2^8 is called Address space.
What is the function of the control unit in the CPU?
The control unit provides the timing and control signal to all operations of microcomputer. It control the flow of data between microprocessor and memory and peripherals.
When evaluating CPU memory do you check the cache memory?
The only memory on the CPU is cache memory and it is only dependent on the CPU type and generation you use.
Which bus transfers the memory address to the IO device or to the memory device?
DMA Direct Memory Access DMA transfers data directly from the drive to memory w/out involving the CPU.
What is logical address space and physical address space?
Logical address is the address generated by the CPU (from the perspective of a program that is running) whereas physical address (or the real address) is the address seen by the memory unit and it allows the data bus to access a particular memory cell in the main memory. All the logical addresses need to be mapped in to physical addresses before they can be used by the MMU. Physical and logical addresses are same when using compile time and load time address binding but they differ when using execution time address binding.
How important is a CPU in terms of memory?
Although memory and CPUs are linked together very closely, a CPU is only important to memory when the memory is active. It is the CPU that writes to and reads from memory (or other devices that are under the control of the CPU). When the memory is idle, its only function is to retain data ready for it to be written over or read. In almost all cases. memory can do this without any intervention by a CPU. In volatile memory, a power supply needs to be provided to retain the data. Non-volatile memory on the other hand will stored data without power. An example of this kind of memory is a USB drive that can be unplugged from a USB port and retain all data without needing either a power supply or a CPU. Memory in fact is rather more important to the CPU than the other way round. The CPU operates as directed by a program that is stored in memory. Without memory, a CPU will not have a program to run so will not be able to fucntion.
How is data transferred between a CPU and RAM?
A memory management unit (MMU) is a small device between CPU and RAM recalculating the actual memory address, for example to provide an abstraction of virtual memory or other tasks.
