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rom
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Which component on a computer stores permanent instructions which cannot be changed?
The ROM BIOS chip stores permanent instructions. ROM means read-only memory. BIOS means basic input/output system, meaning the very basic instructions needed to power up the computer. From there, the operating system loads.
What is the difference between primary and secondary memory?
P.M. memory includes RAM and ROM, which is temporary and permanent both. S.M. memory is just permanent memory which is used for the future. P.M. memory is used for the present work.
What Consists of electronic components that store instructions waiting to be executed by the processor data needed by those instructions and the results of processed data information?
Memory
What consists of electronic components that store instructions waiting to be executed by the processor data needed by those instructions and the results of processed data (information).?
Memory
How is a memory-resident part of an operating system different from a nonresident part of an system?
A memory-resident part of an operating system is continuously loaded into the computer's memory and ready for immediate use, enabling faster access and better system performance. On the other hand, a nonresident part is stored on the disk and is only loaded into memory when needed, causing delays in accessing the functionality.
The proper sequence of actions in a machine cycle is?
The proper sequence of actions in a machine cycle typically includes fetch, decode, execute, and writeback. During fetch, the CPU retrieves instructions from memory. In decode, the CPU translates the instructions into signals the computer can understand. The execute stage involves actually carrying out the instruction, and writeback stores the result back into memory if needed.
Why is the permanent memory unit called so?
The permanent memory unit, often referred to as non-volatile memory, is called so because it retains stored information even when the power is turned off. This characteristic allows it to preserve data over time, making it essential for storing critical information like operating systems, applications, and user files. Unlike volatile memory, which loses its contents without power, permanent memory ensures that data remains intact and accessible when needed.
What is fold back memory?
Foldback memory is a type of memory configuration where a portion of the memory is used to temporarily store instructions or data that need to be accessed frequently. This helps improve the processing speed of the computer by reducing the time needed to access frequently used information. Foldback memory is commonly used in certain types of microprocessors to enhance performance.
Why a computer needs two kinds of memories?
A rather basic answer is that RAM means Random Access Memory. This memory is volatile, and everything is lost when the computer is closed down.ROM means Read Only Memory. This is stable memory placed there by the manufacturer to keep the instructions needed to begin the booting up process when the computer is switched on.
What are the advantages of memory mapped IO?
Memory mapped IO uses a portion of RAM to handle IO requests. In this manner, instructions the CPU uses for reading and writing memory can also be used for IO, reducing the circuitry needed. This makes the CPU simpler, cheaper and more effecient.
Where are Rom situated in a computer?
ROM (read-only memory) chips are installed on a computer's motherboard. The model of the board usually determines the type of ROM needed to control a computer's boot routine. ROM is often called "nonvolatile memory," meaning that an electrical current is not needed to maintain the prerecorded data instructions on the chip. The instructions cannot be overwritten, and only special equipment can be used to rewrite or erase the data
Why is cache memory needed?
Cache Memory is needed because Hardware implements cache as a block of memory for temporary storage likely to be used again.
