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ROM A diode normally allows current to flow in only one direction and has a certain threshold, known as the forward breakover, that determines how much current is required before the diode will pass it on. In silicon-based items such as processors and memory chips, the forward breakover voltage is approximately 0.6 volts.
By taking advantage of the unique properties of a diode, a ROM chip can send a charge that is above the forward breakover down the appropriate column with the selected row grounded to connect at a specific cell. If a diode is present at that cell, the charge will be conducted through to the ground, and, under the binary system, the cell will be read as being "on" (a value of 1). Iif the cell's value is 0, and there is no diode link at that intersection to connect the column and row. So the charge on the column does not get transferred to the row.
The way a ROM chip works necessitates the programming of complete data when the chip is created. You cannot reprogramme or rewrite a standard ROM chip. If it is incorrect, or the data needs to be updated, you have to throw it away and start over. Creating the original template for a ROM chip is often a laborious process. Once the template is completed, the actual chips can cost as little as a few cents each. They use very little power, are extremely reliable and, in the case of most small electronic devices, contain all the necessary programming to control the device.
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What is a another name for a primary storage?
RAM
What is the name of the memory that sits between the processor and the primary memory?
Cache
What is the other name of RAM?
RAM is the abbreviation for Random Access Memory.
How is cache different from primary memory?
Cache memory is a memory that is used by CPU so that the average time to access the memory is reduced. It is a smaller and faster memory that stores copies of data which is used in frequently accessed main memory locations, On the other hand, Primary memory is the main memory of the computer. The processor can easily access, store and retrieve information from the primary memory. Primary memory has two types, Random access memory and read only memory.
Name any 2 types of primary memory?
RAM or ROM
Example of primary memory?
The memory that the computer processor accesses directly is primary memory. It is wired directly to the processor. RAM is primary memory on a computer.
What does the primary memory and secondary memory consists of?
primary memory consist of RAMsecondary memory consist of ROM
IS the Internal memory only primary memory or both primary or secondary memory?
Intenal memory is only primary memory. The term secondary memory is used for External storage like hard disk etc.
What is the difference between cache-memory and primary-memory?
Cache memory is smaller and quicker, primary memory larger and slower.
Define primary memory?
primary memory is built in memory on a computer it is the main type of memory.... eg RAM ROM and HDD
Is RAM is a primary memory or secondary memory?
its primary or main memory. all the programs(active or programs currently running on the processor) including operating system reside in RAM .
Read-only memory is also referred to as main memory or primary memory?
False. The main or primary memory is the Random Access Memory that is both readable and writable.
