Term that comes from the words PEL (picture element). A px (pixel) is the smallest portion of an image or display that a computer is capable of printing or displaying.
The optical disc makes use of laser technology: digital data are recorded by burning a series of microscopic holes, or pits, with a laser beam into thin metallic film on the surface.
Laser stands for "Light Amplification by Stimulated Emission of Radiation." In the context of optical disks, a laser is used to read and write data.
Floppy Disk Maximum capacity of Storage Data is : 2.8 MB (i.e. in MB)
Compact Disk Maximum capacity of Storage Data is : CD-700MB DVD - 4GB to 16GB (i.e. in GB)
Pend Drive Storage Capacity is : 1GB to 28,64 GB
but Hard Disk can Store data in Terabyte (TB) like 1 TB and so on so the Hard Disk has the height Capacity to Store Data.
EPROM stands for Erasable Programmable Read-only Memory. It is a programmable read-only memory that can be used for erased and re-used.
Memory unit is one part of central processing unit. there are two types of memory in a computer unit which is primary memory and secondary memory.
ALU, CU and Memory Unit is a Part of CPU
The control unit (CU) is a component of a computer's central processing unit (CPU) that directs the operation of the processor. It tells the computer's memory, arithmetic and logic unit and input and output devices how to respond to the instructions that have been sent to the processor.
The performance of cache memory is frequently measured in terms of a quantity called Hit ratio.
Hit ratio = hit / (hit + miss) = no. of hits/total accesses
The performance of cache memory is often measured in terms of a quantity called "hit ratio" or "hit rate." The hit ratio represents the percentage of memory accesses that result in a cache hit, where the required data is found in the cache. The complement of the hit ratio, known as the "miss ratio" or "miss rate," represents the percentage of memory accesses that result in a cache miss, where the required data is not found in the cache and must be fetched from a slower main memory.
The hit ratio is an essential metric in evaluating the effectiveness of a cache system. A higher hit ratio indicates better cache performance, as a larger proportion of memory accesses are satisfied by the faster cache memory rather than having to fetch data from the slower main memory.
Then binary numbers are commonly used in digital and computer circuits and are represented by either a logic “0” or a logic “1”. Binary numbering systems are best suited to the digital signal coding of binary, as it uses only two digits, one and zero, to form different figures.
Sorting is the process of arranging the data in alphabetical or numeric order either in ascending order or descending order.
A compiler is translator which translate the high level(user understandable code) to low Level (machine understandable code).
Some programming languages are using the Compiler and some using Interpreter.
C/C++ language uses the Compiler.
A scanner is an input device that scans documents such as photographs and pages of text. When a document is scanned, it is converted into a digital format. This creates an electronic version of the document that can be viewed and edited on a computer.
The programs that are permanently stored in ROM (Read-Only Memory) are often referred to as firmware. Firmware is a type of software that is embedded in hardware devices during manufacturing and is intended to remain unchanged throughout the life of the device. Unlike RAM (Random Access Memory), which loses its data when power is turned off, ROM retains its contents even when the power is off, making it suitable for storing essential software or firmware that is needed for the basic operation of a device.
A code which is understandable by the machine i.e. Binary code(101010) known as Machine Code or Low Level Code.
Abacus, plural abaci or abacuses, calculating device, probably of Babylonian origin, that was long important in commerce. It is the ancestor of the modern calculating machine and computer.
The language that a computer can understand and execute is called a "machine language" or "machine code." Machine language is a low-level programming language consisting of binary code (0s and 1s) that corresponds directly to the instructions executed by a computer's central processing unit (CPU).
The process of moving data from main memory (RAM - Random Access Memory) to a disk is called "paging out" or "swapping out." This activity is part of a computer's virtual memory management system. When a computer's physical RAM is insufficient to hold all the currently executing programs and data, the operating system may use a portion of the hard disk (or other storage) as virtual memory.
Real-time Processing: Immediate processing of data as it is generated or received, requiring low latency and quick response times, used in applications like monitoring systems and financial trading.