Data Storage Devices

The segment register in the 80806/8088 microprocessor contains the base address (divided by 16) of a region of memory. Since the register is 16 bits in size, there are 65,536 possible segment base addresses, ranging from 00000H to FFFF0H, in increments of 00010H.

After address translation at the instruction level, the generated 16 bit offset is added to the selected segment register times 16 to generate a physical address between 00000H and FFFFFH. (If the offset and base go past FFFFFH, they wrap around back to 00000H.) Since the offset is also 16 bits in size, and since the overlap is only 4 bits (times 16), then each 64 kb segment overlaps by 16 bytes.

There are four segment registers; CS, DS, ES, and SS, standing for Code Segment, Data Segment, Extra Segment, and Stack Segment.

CS is used for opcode fetches. DS is used for normal data. ES is used for certain string operations as the destination address. SS is used for stack and frame (BP) data.

The segment registers can be implicitly selected by context, or they can be explicitly selected with a segment prefix opcode.

The SD card has the passwords enforced at the electronics level and it is hard to crack the password with software brute-forcing tools. (SD stands for Secure digital, if you are a tech person see the section about passwords in the document : www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf )

there are hardware reset tools, and most will cost you as much as buying a new memory card.

if you have used the memory card with a phone or other devices which stores the sd password internally, [to avoid prompting for the password every time], there is a narrow chance you can recover it from the device. there is an article of this sort at sdrecover.in

below are posts by other members, i do not think any of them will work, you can give your try and update the answer here if you are successful.

get a memory card reader and link it to you computer when you do that go search the root files and look for a file called mmc. when you find the file it will have a bunch of symbols and lines look for any sequence of numbers/letters then enter it on you phone. the other thing is you can go and format the memory stick but the only problem about this is that some phones require that you give them a pass before formatting so that might not work

buy new one...

I had this problem too, inserted in a Nokia N73 and formates it by Tool>Memory>Format memory car

me think it's the easiest way

cause I dont think there would be a program find it or with out erasing the data no result found in search

OR

format using your computer

A Byte is a unit of memory on a computer equaling 8 bits.

A Word a fixed sized unit of memory on a computer handled as a unit by the instruction set or the hardware of the processor (it is an important characteristic of any specific processor design or computer architecture) it will normally be a multiple of bytes. Modern processors usually have a word size of 1, 2, 4, or 8 bytes - (8, 16, 32, or 64 bits).

Taiyo Yuden used to be the industry standard but since they have been taken over by JVC, their quality is terrible. I used to be able to burn 8X rated TY DVD-R discs at 16X and get an overall quality score of 99.2 to 99.3 with DVD Info Pro. I just opened my first spindle of the JVC-Taiyo Yuden DVD-Rs. The first thing I noticed is that the media will not allow burning at a speed greater than 12X. Then I tried burning the same disk 3 times, once at 12X, 8X and 4X. The quality score of all three DVDs was 96 or less (marginal to poor). Until JVC butts out and lets Taiyo Yuden do what they do best, I'll be switching to Verbatim as that is the only other brand I have had good luck with of late.

By the way, these are the 'premium' blanks, not the value line...

There are two types of memories: Primary and Secondary.

The primary memory or the main memory is part of the main computer system. The processor or the CPU directly stores and retrieves information from it. This memory is accessed by CPU, in random fashion. That means any location of this memory can be accessed by the CPU to either read information from it, or to store information in it.

o The primary memory itself is implemented by two types of memory technologies. The first is called Random Access Memory (RAM) and the other is read only memory (ROM). A more appropriate name for RAM is RWM (Read Write Memory), the CPU can write and read information from any primary memory location implemented using RAM. The other part of primary memory is implemented using ROM which stands for Read Only Memory.

Primary memory is much faster and also it is more cost effective. But the secondary memory is much slower and also less costly. It stores the data permanently unless it is erased. The secondary memory is usually available in the form of floppy disk storage media, hard disk, CD, DVD, Pen drive (i.e. Mass storage devices), memory chips. A 5 and1/4 inch floppy disk typically stores 1.44 mb of data. The data on the floppy disk is organized in terms of tracks and sectors. Hard disk can have large capacity something like 80-300 GB's or higher. Hard disk itself is made up of, large number of platters. Hard disk is usually much faster compared to floppy disk. CD can store up to 750 mb of data. Information on CD ROM is organized in terms of a spiral track. A DVD is digital Versatile Disk and can store 4.6 Gigabyte of information. All these CD disk are usually write ones and read many times (if the disk is not multisession and re writable). So are the DVDs.

so as a conclusion, pen drive is a secondary type of memory, since it is a peripheral device and needs to be connected to the computer to retrieve the datas.

floppy disks are read/write storage devices, they are a backing store, a non-volatile long term storage which will not lose data when power is lost.

Random access storage is the original term for RAM, the random access memory term was used a a marketing term and has stuck since.

Another Answer

YES - floppy disk are Random Access storage devices.

The floppy disk, both the original 8 inch size and the later 5 1/4 inch size were used in all sorts of relatively early computer equipment.

• To distribute and load firmware in a model of the IBM System/360 mainframe.
• For software distribution as well as backup/restore media for the IBM System/38 and various other model midrange computer equipment.
• For software distribution and data storage on a Digital Equipment Corporation (DEC) PDP-11 system.
• For data storage and various word processing machines.
• As system devices and data storage for the original IBM Personal Computer and other similar personal computers.

Its use was replaced by the 3 1/2 inch diskette when it became available.

In the old days, computers had floppy drives. They usually had two, so you could put a program disk in drive A, and a data disk in drive B.

Later computers kept two drives so they could support both formats: 5 1/4 inch, and 3 1/2 inches. By this time, hard drives were universal, and almost always installed as the C drive.

Then... hard drives