Operating System

Key Difference between Paging and Segmentation in OS A page is of fixed block size, whereas a segment is of variable size. In Paging, the hardware decides the page size, while the segment size is specified by the user. The paging technique is faster for memory access, but segmentation is slower than the paging method….

Key Differences between Preemptive and Non-Preemptive Scheduling In Preemptive Scheduling, the CPU is allocated to the processes for a specific time period, and the non-preemptive scheduling CPU is allocated to the process until it terminates. In Preemptive Scheduling, tasks are switched based on priority, while in non-preemptive Scheduling, no switching takes place. The preemptive algorithm…

Microprocessor vs Microcontroller: Key Difference Microprocessor consists of only a Central Processing Unit, whereas Micro Controller contains a CPU, Memory, I/O all integrated into one chip. Microprocessor is used in Personal Computers whereas Micro Controller is used in an embedded system. Microprocessor uses an external bus to interface to RAM, ROM, and other peripherals, on…

Key Difference Between Multithreading and Multiprocessing A multiprocessing system has more than two processors whereas Multithreading is a program execution technique that allows a single process to have multiple code segments Multiprocessing improves the reliability of the system while in the multithreading process, each thread runs parallel to each other. Multiprocessing helps you to increase…

Key Difference between DDR3 and DDR4 DDR3 RAM is backward compatible with the older RAM generations, while DDR4 RAM is not backward compatible with the older generation’s RAM. DDR3 RAM has a 240-pin interface. On the contrary, DDR4 RAM has a 288-pin interface. The clock speed of DDR3 varies from 800 MHz to 2133 MHz,…

Key Difference between RAM vs ROM RAM stands for Random-access memory, while ROM stands for Read-only memory. Data stored in random-access memory, popularly known as RAM, stays there until the computer is running, whereas read-only memory, popularly known as ROM, is used mainly in the start-up process of a modern computer. Important RAM types are…