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Computer Memory
The computer memory is a physical device used to store data or programs for use in a computer. Some types of computer memory include RAM (random access memory), ROM (read-only memory), and page cache.
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In serial data devices, such as EEPROM, Flash and Hard Drives where data is echanged serially, addresses need to be sent with the data for each byte or block of data. In parallel data devices, such as DRAM, an address is sent with every byte. With address sequencing, if the data is sequential and not scattered (see "defragmentation" for hard drives or the use of the TRIM command for SSDs and Flash), special read/write commands that do not need to resend address data can be used. This can speed up data access and, for DRAM, save on battery life by not needing to send an address each time. Another technique related to this is "page mode access".
How many pin does a DIMM have?
A DIMM is based on two different pin counts. SDRAM has 168 pins and is an earlier generation of RAM. DDR RAM has 184 pins. Both are considered DIMMS.
What will not retain data after the computer is turned off DVD ram rom harddrive?
Technically, volatile memory, typically implemented as random-access memory (RAM), will not retain its data unless power is applied.
Note that "the computer being turned off" is an ambiguous statement. Most modern computers are always under power to some extend, unless mains cord and batteries are removed. This might include maintaining data storage in otherwise volatile memory.
Also note that most modern operating systems support 'sleep' or 'hibernation' modes, during which the computer is powered down to the extend possible. Data which would be lost (such as data kept in RAM) is stored on a permanent storage media, typically a hard disk, during this time, and is being re-loaded when the computer returns to normal operation. While the RAM has lost its data during that period, saving and restoring it makes it appear to have persistent storage.
Which type of memory module is used in a desktop computer?
DDR, DDR2, SDR, DDR3, DDR4. SO-dimm are for laptops
What is the purpose of command device himem.sys in the config.sys file?
To activate himem.sys which frees up more conventional memory and allows for DOS to be loaded into the HMA (high memory area) It manages memory as a device
1. A group of binary digits or bits (usually eight) operated on as a unit.
2. Such a group as a unit of memory size.
No, byte is a noun.
Random Access Memory is volatite it is true or false?
RAM is called volatile as it only works when the computer is on
The number of memory locations that a CPU with 16 bit program counter can address is?
The number of memory locations that a CPU with 16 bit program counter can address is 65,536. However, the 8086/8088 has a segmented architecture giving a total addressibility of 20 bits or 1,048,576 locations. Without changing the code segment register, though, you can only access 65,536 locations.
How can you defend yourself from a battering ram?
There's really no good way - you just have to hope that the building (or whatever you're behind) is strong enough to stand up to the ram.
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कोई शोहरत पर नाज़ करते हैं
जिसके साथ आप जैसा दोस्त हो
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1 TB hard-disk or 500 GB hard-disk is better?
A 1 TB disk is twice the capacity of a 500 GB disk.
I TB = 1000 GB
500 GB = 0.5 TB
A video usually has a few MB per minute; exactly how much will depend a lot on the quality of the video.
How can you increase the execution time of php script?
You can use the set_time_limit function to increase the execution time of a php script. Example: set_time_limit(120); // Sets the time limit to 2 minutes
How can we find a system is DDR1 or DDR2?
There are 2 easy ways.
No#1- Downlaod a 'system analysis' tool (e.g. CPU-Z) run the progamme and check its window.
http://www.cpuid.com/cpuz.php
No#2- Open the case, and look at the ram slots. DDR1 has 184 pins, DDR2 has 240 pins. The 'notch' in the ram stick is also in different places on DDR1 vs DDR2. After you have look at a few ram sticks, you can soon pick the difference between DDR1 amd DDR2, but in the beginning it is no so easy. There is quite often a sticker on the side of the ram telling you what type/speed it is to make things easier, but it can be hard to see inside the case.
DDR1 also ranges from DDR-200 (PC-1600) to DDR-433 (PC-3500) and DDR2 ranges from DDR2-400 (PC2-3200) to over DDR2-1066 (PC2-8600)
How many mega bytes are in a terabyte?
Many!
the conversion is like this:
1gb = 1024mb
1mb = 1024kb
1kb = 1024b
What is the primary source of cooling for most computers?
don't have anything block the computer. usually in most computers they have fans for cooling anyways, and if you block that or not allow it to do its job it will get hotter because its something you can control.
False, the processor does not use permanent storage to hold both data and instructions while it is processing them. The processor uses temporary storage to hold data and instructions.
What happens if your computer memory gets full does it get slower?
The answer is yes. Windows has a file on your hardrive called a page file that it uses for additional memory if the normal memory (RAM) gets full. Hard disk is much slower than memory so yes, it becomes vastly slower.
