what is the use of memory ? how many information can hold in 1mb of memory
Answers
Answer:
A single byte is made up of 8 bits.
A “bit” is a simple on-off switch where on=1 and off=0.
It follows that one megabyte is actually a series of 8 million on/off switches.
Computer memory uses this series of switches to accept, retain and retrieve data.
The process by which the computer converts human-readable data into computer-storeable data is another subject, and for another question perhaps.
Now, in passing, I’ve noticed questions in Quora relating to computer memory which questions indicate a lack of understanding of the need, types, physical size, operation of computer memory. Having been in the business since Pontius took up flying lessons, I thought that I might have a try at encapsulating the subject from start to finish together with perhaps a few examples for comparison.
It all began with the subject “Conventional Data Processing” which meant that the data was registered on punchcards which became the “data memory” which were then processed in a specific sequence through a series of physical (electro-mechanical) machines which detected the holes in punchcards. The holes were placed in such a manner as to indicate a letter, number, or special sign none of which made any sense to the machine that was processing the punchcard. The punchcard was originally created by a cardpunch machine by an operator who read data from paper (say an invoice, or a cheque payment, or an employee name & number) - depending upon the purpose of the overall exercise. This process was known as ‘punching’ and usually resulted in a tray of puncards which were collectively known as a ‘tray of cards’ or sometimes as a ‘batch of cards’ . After being ‘verified’ (another punch-similar operation) to assure the accuracy of the punched input from the ‘source’ document as the original paper documents were known, the cards were readied for the next stage in processing.
The batch of cards were then processed through a ‘sorting’ machine (always a pleasure to watch at work) which allowed the punchcards to be placed into a known sequence so they would later match up with master and subsidiary cards. Naturally, any faulty cards (ones which the sorter could not read) were dropped into special tray for later human rectification. We may now have a batch of punchcards each one representing an invoice line for the sale of a product to the customer whose cost must now be advised to the customer in order that he may pay for it.
The next step in the process is to discover who the customer is, their name and address, all the invoice line items, together with the total invoice value (money to be paid). This is accomplished by using another machine
Answer:
A memory is just like a human brain. It is used to store data and instructions. Computer memory is the storage space in the computer, where data is to be processed and instructions required for processing are stored. The memory is divided into large number of small parts called cells.
The answer is: one megabyte.
That is: 0ne million “bytes”.
A single byte is made up of 8 bits.
A “bit” is a simple on-off switch where on=1 and off=0.
It follows that one megabyte is actually a series of 8 million on/off switches.
Computer memory uses this series of switches to accept, retain and retrieve data.
The process by which the computer converts human-readable data into computer-storeable data is another subject, and for another question perhaps.
Now, in passing, I’ve noticed questions in Quora relating to computer memory which questions indicate a lack of understanding of the need, types, physical size, operation of computer memory. Having been in the business since Pontius took up flying lessons, I thought that I might have a try at encapsulating the subject from start to finish together with perhaps a few examples for comparison.
It all began with the subject “Conventional Data Processing” which meant that the data was registered on punchcards which became the “data memory” which were then processed in a specific sequence through a series of physical (electro-mechanical) machines which detected the holes in punchcards. The holes were placed in such a manner as to indicate a letter, number, or special sign none of which made any sense to the machine that was processing the punchcard. The punchcard was originally created by a cardpunch machine by an operator who read data from paper (say an invoice, or a cheque payment, or an employee name & number) - depending upon the purpose of the overall exercise. This process was known as ‘punching’ and usually resulted in a tray of puncards which were collectively known as a ‘tray of cards’ or sometimes as a ‘batch of cards’ . After being ‘verified’ (another punch-similar operation) to assure the accuracy of the punched input from the ‘source’ document as the original paper documents were known, the cards were readied for the next stage in processing.
The batch of cards were then processed through a ‘sorting’ machine (always a pleasure to watch at work) which allowed the punchcards to be placed into a known sequence so they would later match up with master and subsidiary cards. Naturally, any faulty cards (ones which the sorter could not read) were dropped into special tray for later human rectification. We may now have a batch of punchcards each one representing an invoice line for the sale of a product to the customer whose cost must now be advised to the customer in order that he may pay for it.
The next step in the process is to discover who the customer is, their name and address, all the invoice line items, together with the total invoice value (money to be paid). This is accomplished by using another machine