SOP (Sum of Product) and POS (Product of Sum) are the methods of representing a reduced logic expression. The basic difference between the two is that SOP expresses a Boolean function as a sum (logical OR) of product (logic AND) terms, while POS expresses a logic function as a product (logic AND) of sum (logic OR) terms. Read this article to learn more about SOP and POS and how they are different from each other. What is SOP? Sum of Product (SOP) is a method of representing a logic function by using minterms. The expression of a SOP includes product ... Read More

In this post, we will understand the difference between RGB and CMYK colour schemes −RGB Colour SchemeIt is used with digital works.The primary colours in this scheme are ‘Red’, ‘Green’, and ‘Blue’.It is an additive Type Mixing scheme.The colours of this scheme’s images are more vibrant.It has a wide range of colours in comparison to CMYKThe file formats to work with this colour scheme are JPEG, PNG, and GIF.CMYK Colour SchemeIt is used with print works.The primary colours in this scheme are ‘Cyan’, ‘Magenta’, ‘Yellow’, and ‘Black’.It is a subtractive Type Mixing scheme.The colours of this scheme’s images are less ... Read More

Printers and Scanners are important peripheral devices used with the computer systems, however they are absolutely different devices in terms of their function. Printers act as output devices, while scanners are input devices. Read this article to find out more about printers and scanners and how they are different from each other. What is a Printer? Printers are the most common type of output device which are used for taking a hardcopy of any digital document. It typically consists of a mechanism for transferring ink onto a paper. Based on the printing technology used, there are two ... Read More

In this post, we will understand the difference between USART and UART modes −USART (Universal Synchronous/Asynchronous Receiver/Transmitter)The half-duplex mode is used.The speed of USART is more in comparison to UART.It uses data signals as well as clock to work.The data is transmitted in the format of blocks.It can work similar to UART.It is more complex in comparison to UART.The receiver doesn’t require to know the baud-pace of the transmitter.This is because it gets information by the master and the clock signal.The data is transmitted at a definite (specific) rate.UART (Universal Asynchronous Receiver/Transmitter)It uses full-duplex mode.Its speed is less in comparison ... Read More

In this post, we will understand the difference between system calls fork and vfork −The ‘fork’ system callIn this system call, the child and parent process have separate memory spaces.The child and parent process are executed simultaneously.This call uses the copy-on-write as alternative.Child process doesn’t have the ability to suspend execution of the parent process in this system call.The page of one process doesn’t get affected by the page of other process.It is more frequently used.No address space is wasted.If the child process alters the page in the address space, it is not visible to the parent process.The ‘vfork’ system ... Read More

In computers, an address is used to identify a location in the computer memory. In operating systems, there are two types of addresses, namely, logical address and physical address. A logical address is the virtual address that is generated by the CPU. A user can view the logical address of a computer program. On the other hand, a physical address is one that represents a location in the computer memory. A user cannot view the physical address of a program. Read this article to find out more about logical and physical address and how they are different from each other. ... Read More

In this post, we will understand the difference between symmetric and asymmetric multiprocessing −Asymmetric MultiprocessingIn this kind of multiprocessing, the processors are not considered as equal.The task of the operating system is done by the master processor.There is no communication between the processors since they are controlled by the master processor only.In this multiprocessing, process follow the master-slave pattern.The systems are relatively inexpensive.This kind of multiprocessing systems are easier to design.Symmetric MultiprocessingIn this kind of multiprocessing, all the processors are considered equal.The tasks of the operating system are done by individual processors.All the processors communicate with each other since they ... Read More

In Operating Systems, Preemptive Scheduling is a type of CPU scheduling method in which the CPU is allocated for a limited time to a given process. In contrast, Non-Preemptive Scheduling is the scheduling technique in which the CPU is allocated to a process and hold by it till the process gets terminated. Read this article to learn more about Preemptive and Non-Preemptive Scheduling in Operating System and how they are different from each other. What is Preemptive Scheduling? Preemptive Scheduling is a type of CPU scheduling in which the resources (CPU Cycle) have been allocated to a process for a ... Read More

In this post, we will understand the difference between spooling and buffering concepts in operating system −SpoolingIt overlaps the input/output of a specific job with the execution of another job.It is more efficient in comparison to buffering.Buffering is less efficient than spooling.It can be expanded as ‘Simultaneous peripheral operation online’.Spooling considers the disk as a huge spool.BufferingIt overlaps the input/output of a specific job with the execution of the same job.It is a limited area in the main memory.It doesn’t have any expansion.It is less efficient in comparison to spooling.Read More

In this post, we will understand the difference between internal and external fragmentation −Internal FragmentationThe difference between the memory allocated and the space required is known as internal fragmentation.In this fragmentation, fixed-sized memory blocks are used to process data.This process occurs when a method or process is larger than the required memory.The method used in internal fragmentation is ‘best-fit’ block.It occurs when the memory is divided into fixed sized partitions.External FragmentationThe unused spaces that is formed between fragments of non-contiguous memory, which are too small to help with a new process, is known as external fragmentation.It uses variable-sized memory blocks ... Read More