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Difference between RAM and ROM

By Dinesh Thakur

RAM stands for random access memory. So do you know what does random access mean? Here, random access means that CPU can directly access RAM’s address location, which is why it is named random access memory and quickly accessible.

RAM is stored on the motherboard in modules that are called DIMMs. DIMM stands for dual inline memory module. A DIMM is a dual inline module because it has two independent rows of these pins, one on each side. A dim memory module has either 168, 184, 240, or 288 pins, and then the dim is installed on the motherboard in the memory slots. A motherboard can have various number of memory slots. The average motherboard will have between 2 and 4 of them. [Read more…] about Difference between RAM and ROM

What is Primary Memory? – Definition

By Dinesh Thakur

Primary memory is also known as main memory or may also refer to “Internal memory.” and primary storage. All those types of computer memories that are directly accessed by the processor using data bus are called primary memory. That allows a processor to access stores running programs and currently processed data that stored in a memory location. [Read more…] about What is Primary Memory? – Definition

What is Secondary Memory? – Definition

By Dinesh Thakur

Secondary memory is also known as secondary storage. The secondary memory is accessed indirectly via input/output operations. This memory is also called permanent, external, stable or persistent memory. It is characterized by its slowness and cheapness, relative to the RAM, and by its permanent appearance. [Read more…] about What is Secondary Memory? – Definition

What is SDRAM (synchronous DRAM)? – Definition

By Dinesh Thakur

Definition: SDRAM stands for Synchronous Dynamic Random Access Memory. SDRAM operates more efficiently as it works according to the synchronization of the clock. This makes it easy to manage faster, and the speed of the SDRAM measured in MHz instead of nanoseconds. SDRAM introduced in 1969-70. It most widely used in computers. Nowadays it is also used in other systems. [Read more…] about What is SDRAM (synchronous DRAM)? – Definition

What is EEPROM? – Definition

By Dinesh Thakur

Definition: EEPROM (pronounce as “E-E-PROM”) stands for Electrically Erasable Programmable Read-Only Memory. It is a non-volatile ROM chip which used for storing a small amount of data in computers or some other electronic devices. Through EEPROM, an individual byte of data can erase and reprogrammed entirety, not selectively by the electrical voltage. [Read more…] about What is EEPROM? – Definition

Which two of the most important touch-based input technologies used

By Dinesh Thakur

In terms of computing’s history, we’re just beginning to scratch the surface of the lifestyle applications of touch-sensitive gadgets. In this article, we’ll take a look at two of the most important touch-based input technologies used in computers, smartphones, laptops, and tablets. [Read more…] about Which two of the most important touch-based input technologies used

How To Install An HDD or SSD

By Dinesh Thakur

Whether you’re looking to replace a failed drive or upgrading to get more capacity and faster access times, installing a hard drive is simple. Just follow these steps to insert, secure, and power a new HDD in your desktop PC. [Read more…] about How To Install An HDD or SSD

Types of Storage Device | Types of Backup

By Dinesh Thakur

There are three types of storage that we can use for our files:HDDs, SSDs, and cloud-based storage.

In some cases, we have the option of foregoing one type in favor of another when looking for more capacity, faster load times, or dynamically shifting capacities. Read on to determine which applications are best suited to which storage types. [Read more…] about Types of Storage Device | Types of Backup

What is Ferrite-Core memory?

By Dinesh Thakur

The principle form of electronic MEMORY used in computers prior to the invention of semiconductor memory chips. It consisted of thousands of tiny rings called cores, made from a magnetic FERRITE material and each threaded onto three fine copper wires: the whole formed a two-dimensional mesh much like a knitted textile. [Read more…] about What is Ferrite-Core memory?

What is ECC Memory? – Definition

By Dinesh Thakur

Definition: ECC Memory stands for Error-Correcting Code Memory is a type of RAM that adds error detection and correction circuitry to automatically detect and correct single-bit memory errors in any of the chip. As the name of the memory suggests, ECC memory is a kind of memory that can identify and fix the most common data error, but it used for single-bit memory errors. [Read more…] about What is ECC Memory? – Definition

What is EPROM? – Definition

By Dinesh Thakur

Definition: EPROM (pronounced ee-prom ) stands for Erasable Programmable Read-Only Memory. EPROM is a type of ROM chip that can retain the data even if there is no power supply. The data can be erased and reprogrammed by using ultraviolet (UV) light. The UV light clears the data on the chip so that it can reprogram. For writing and erasing data on the EPROM, we need a particular device which is known as PROM programmer. The process of programming an EPROM is often called BURNING, and the box into which it is plugged to program it an EPROM burner. [Read more…] about What is EPROM? – Definition

What is VRAM (video ram)? – Definition

By Dinesh Thakur

Definition: VRAM (pronounced “vee ram”) stands for video random access memory or video RAM. It is a particular type of memory used on some video adapters to speed up the display of images on the screen. VRAM costs more than regular RAM (DRAM, dynamic RAM), but it does make the screen snappier. VRAM is the random access memory which is used to store the image and video data which is being displayed by the computer, or you can say that it will serve as a buffer between the CPU (Central Processing Unit) and video card. [Read more…] about What is VRAM (video ram)? – Definition

What is PC RAM?

By Dinesh Thakur

Understanding RAM on a PC gets pretty complicated, especially if you’re using DOS instead of Windows. If your system is working okay already, don’t bother with this information because it’s pretty technical. But if you’re running out of memory-if certain programs won’t run or you can’t create large files-you need some background knowledge before you march down and buy more memory. You may already have enough. [Read more…] about What is PC RAM?

What is Memory?

By Dinesh Thakur

In humans, the memory is mind warehouse , where are stored for a later use the various components experience. The memory of a computer somewhat similar but more limited at its possibilities. [Read more…] about What is Memory?

What is laser printer? – Definition

By Dinesh Thakur

Definition: A laser printer (also known as Page Printers as they prints the whole page at once) represent a real technological revolution. laser printer is a type of printer which makes use of a laser beam to produce an image on the drum or you can say that it is a printer that makes use of a focused beam of light to transfer text and images onto paper. It was first developed by Gary Starkweather at Xerox PARC in 1971. Laser printer makes use of laser technology for the printing of copies onto the paper. [Read more…] about What is laser printer? – Definition

What is Firmware?

By Dinesh Thakur

Firmware is a category or class of memory chips which contain information that is permanent (meaning it isn’t erased when you shut off your computer or when the power suddenly goes out on a dark and stormy night). The best examples of firmware are the ROM chips in your computer that contain programs installed at the factory. Firmware cannot be altered, per se, but in some cases the whole chip can be completely replaced by a technician when it becomes outdated or obsolete. [Read more…] about What is Firmware?

What is Fatal Error?

By Dinesh Thakur

Fatal error!? Why do they do this to us? Why can’t they just say, “Oh, excuse me, but your system has a serious problem. The trouble may just be temporary, and if you’ll turn off the computer and try again, maybe everything will work fine.” [Read more…] about What is Fatal Error?

What is DRAM (Dynamic Random Access Memory)? – Definition

By Dinesh Thakur

Definition: DRAM stands for Dynamic Random Access Memory. DRAM is a technical term for a type of random access memory (RAM) that can retain its contents only for a very brief period (measured in milliseconds) and must, therefore, be continually refreshed by reading its contents at short intervals. [Read more…] about What is DRAM (Dynamic Random Access Memory)? – Definition

What is DPI (Dots Per Inch)?

By Dinesh Thakur

In computer graphics, we used many terms like pixel, dot, resolution, sharpness, Quality of picture. All these terms are used during soft copy and hard copy output. When we talk about soft copy output, we generally deal with pixels. Hard copy output considers the term dots pitch for picture quality. Quality of printed media depends upon the distance of dots. Density means; how many dots are located under per inch area. Greater the DPI, more enhancement and focus on the quality of printed media. [Read more…] about What is DPI (Dots Per Inch)?

What is Disk Controller?

By Dinesh Thakur

The disk controller is circuitry on the computer’s motherboard or on a plug-in circuit board that controls the operation of your hard disk drive, floppy disk drives, or both. When the computer wants to transfer data to or from the disk, it tells the disk controller. The controller in turn sends electronic commands to the disk drive making the disk spin and move its magnetic heads to the proper location on the disk. The controller then transfers the data between the computer and the disk drive. The computer’s OPERATING SYSTEM and BIOS issue commands directly to the controller to BOOT the computer and to access files stored on the disks.  [Read more…] about What is Disk Controller?

What is Cycle Time?

By Dinesh Thakur

The cycle time of a computer is the time required to change the information in a set of registers. This is also sometimes called the state transition time. The register cycle time of a processor is sometimes referred to as the internal cycle time, clock time, or simply cycle time. Main memory cycle time is usually several times the internal cycle time. The internal cycle time may not be of constant value. [Read more…] about What is Cycle Time?

What is Memory mapping?

By Dinesh Thakur

Memory mapping is the translation between the logical address space and the physical memory. The objectives of memory mapping are (1) to translate from logical to physical address, (2) to aid in memory protection (q.v.), and (3) to enable better management of memory resources. Mapping is important to computer performance, both locally (how long it takes to execute an instruction) and globally (how long it takes to run a set of programs). In effect, each time a program presents a logical memory address and requests that the corresponding memory word be accessed, the mapping mechanism must translate that address into an appropriate physical memory location. The simpler this translation, the lower the implementation cost and the higher the performance of the individual memory reference. [Read more…] about What is Memory mapping?

What is Cartridge Hard Disk?

By Dinesh Thakur

A typical hard disk is built right into your computer or is housed in a box nearby-and you never see the actual hard disk or take it out of its container. A cartridge hard disk, though, is removable. It works kind of like a giant floppy disk in that it slips into a slot in a special kind of removable hard drive case (actually, it’s more like sliding a video tape into a VCR). [Read more…] about What is Cartridge Hard Disk?

What is disk cache? – Definition

By Dinesh Thakur

Definition: A disk cache (cache memory) is a temporary holding area in the hard disk or random access memory (RAM) where the computer stores information that used repeatedly. The computer can use it to speed up the process of storing and accessing the information much more quickly from the disk cache than if the information stored in the usual place (which might be on a disk or in a part of the computer’s memory that takes longer to access). The term disk cache can also refer to a disk buffer and cache buffer. [Read more…] about What is disk cache? – Definition

What is Buffer? – Definition

By Dinesh Thakur

Definition: A buffer is Like a cache, that is a data area of computer memory (RAM) reserved for temporary storage. For instance, you’ve probably noticed that you can quickly type a bunch of commands on the keyboard, and then just sit back and watch your computer carry out the commands one after another. This is because the computer stores the keys you pressed in a buffer-after doing one command; it goes back to the buffer to get the next one in line. [Read more…] about What is Buffer? – Definition