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Showing posts from May, 2024

What is RADAR? How does it work?

What is RADAR? The full form of RADAR is Radio Detection And Ranging. It is a system that is used to detect, locate and track objects. It uses radio waves to determine the object. It mainly consists of a transmitter and a receiver. It is also used to detect aircraft and ships. From the transmitter installed in RADAR, the radio wave is transmitted towards the object and when the radio wave hits the object and returns back, then in RADAR The receiver installed receives it and by calculating the value of the radio wave frequency, finds out the distance, angle etc. of the object. Types of RADAR Pulse radar:  This is a simple type of radar that works by transmitting short pulses of radio waves and then measuring the time it takes for the echoes to return. The range of the target is calculated by multiplying the time delay by the speed of light. Continuous-wave (CW) radar:  This type of radar transmits a continuous signal and measures the Doppler shift of the reflected signal to det...

Scratchpad memory (SPM) CPU's fastest memory

 Scratchpad memory (SPM) CPU's fastest memory Speed ​​is everything in the computer world, and the processor (CPU) is the heart of it. But even the CPU needs a little help sometimes, especially when it comes to fast data access. This is where the CPU scratchpad memory comes in, which is a small but high-speed internal memory that provides a dedicated space for temporary data and calculations. What is scratchpad memory? Think, what do you do when you do math? Perhaps jot down figures and calculations in a small notebook or piece of paper. The scratchpad of CPU is also something similar. It is a small, fast memory within the CPU itself that is used to store and quickly access temporary data. This data may include numbers, intermediate results, or small program instructions. Why is scratchpad memory important? CPU also has main memory (RAM), so what is the need of scratchpad? The main reason is speed. The scratchpad is very fast, usually faster than RAM. This means the CPU does not ne...

What is power factor? Power factor formula

 What is power factor? Power factor formula In the study of electronics engineering, we often hear the term power factor. It plays an important role in understanding the efficiency of electrical circuits. Let us understand power factor in simple language in this blog post and also learn its formula. What is Power Factor? In simple words, power factor is the ratio of that part of the total current drawn by an electric circuit that is actually used to do useful work. We express it in percentage (%). High Power Factor: This is an ideal situation, where most of the current is used to do the actual work. It is considered to be between 90% to 100%. High power factor is an indicator of efficiency, which means less energy is wasted. Low Power Factor: This means that a large part of the current is being spent in generating reactive power in the circuit instead of doing actual work. This is a power factor of less than 80% and indicates inefficiency, leading to more energy being wasted. Power...