Direct access refers to the ability to retrieve data from any point in a storage device directly, without having to sequentially access preceding data. This is common in random access memory (RAM) and solid-state drives (SSDs). Serial access, on the other hand, requires data to be accessed sequentially in the order it was stored, such as in magnetic tape drives. This difference impacts the speed and efficiency of data retrieval in storage systems.
direct access allows you to access the needed record directly with serial access u have to go through all the others before arriving to the desired one
RAM or Random Access Memory is used for fast computer memory. The word "Random" is a bit of a misnomer, as there is nothing random about access to this memory. What it actually means is that you can select an address at "random", that is, any address within the capability of the memory, and read or write data to/from that address just as fast as you could read or write data to any other address. In other words, data stored anywhere in the memory can be accessed quickly. Serial memory is different in that access time depends upon where on the medium the data is stored. Examples are magnetic tape, optical disk, magnetic disk. "arbitary access" is not a term used in electronics that I can find. I think it is just another term for "random access".
name one access secondary device?
give the difference between serial port and parallel port
Dont use serial computers.... They killllll :O parrelell computers are lame as well its the same image on the screen the whole time now to ur architecture question figure it out urself.....
direct access allows you to access the needed record directly with serial access u have to go through all the others before arriving to the desired one
, Both terms "direct access" and "sequential access" as you must have guessed refer to accessing schemes in the file system. In broadest sense difference between these two can be stated like this -In sequential access data is stored at random locations. -In direct access data is stored at sequential locations. ( Ironically this is true No matter what kind of first impression we get when we hear it for the first time. ) -In sequential access addition of data is fast but retrieval of data is slow. -In direct access addition of data is slow as reordering of data blocks may be needed to put current data block after the last used data block for the file. But retrieval of data is fast. -Data structure implementing Sequential access is linked list. -Data structure implementing Direct access is an Array. Application areas:- A situation where rate of addition of data is much larger compared to retrieval of data Sequential access is preferred, in opposite situation Direct access is more suitable. Regards, Prime There are technical explanations as to how it works, but in simple terms, direct access means going straight to the record you want, whereas sequential access means going through all records one by one until you find the one you want.
Direct. Data can be accessed directly without going through all the preceding data to find what is required. An example of serial access would be tape.
serial because it takes a lot of time to retrieve information
Serial Access: • In serial access the data is accessed from the beginning and the searched through the entire bits of data until the required information is found. • Example of serial access can be found in daily life: The old film reel where the movie starts at the beginning and data is read in order till the end. Direct Access: • In this method the computer can calculate, and the search the file, for the given information, and the computer directly goes to the given in formation. • Example of this access in daily life: Pen drive, it is easily accessed it can store DVD movies
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telidu nana...
disk storage-> direct data access storage tape storage -> serial data access storage
Let's say you have a set of 100 pieces of data, which are all names. Now, if you want to find a specific name, "Kevin", you can find it in different ways. You could either go through each of the records one after another, or you could randomly generate a number, and check if that record is "Kevin", this is potentially faster than sequential access as "Kevin" could be the last record.
A serial hard drive is the same as a SATA hard drive. SATA is Serial ATA, and PATA is Parallel ATA.
Random Access memory
Serial printers are connected via the serial (COM) port of the computer. "Non-serial" printers are connected through another interface, such as the parallel port, USB, ADB. FireWire, etc...