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   COMPUTER MEMORY        Memory is the most essential part of the computer. Memory is the storage part of the computer. We need to store the data. This storage enables us to use stored data in the future. Computer memory is mainly divided into  Primary memory, Secondary memory, and Cache memory . The memory and storage devices are measured in terms of bits and bytes. The measurements used are 0, 1 binary digit. 1. Primary Memory : Memory units are the storage areas in the computer. The term "memory" usually refers to the main memory of the computer, whereas the word "storage" is used for the memory that exists on the desks, CDs, etc. The main memory is usually called a physical memory which refers to the 'chip'  ( Integrated Circuit) capable of holding data and instructions.  There are different types of memories as follows : a. Read-Only Memory ( ROM ) : ROM chip       In ROM, the information is burnt or pre-recorded into the ROM chips at the manufacturing

 The Last Leaf Summary : The Last Leaf was a short story written by O. Henry. The story begins with Johnsy and Sue who were young artists and friends living together in a small flat. Once, Johnsy fell seriously ill in the month of November. The doctor diagnosed that she was suffering from pneumonia. Her friend, Sue was really worried and tried to cheer her up so that she would recover soon. But Johnsy had given up the hope of survival. She had somehow made up her mind that she would never recover and would die soon. Seeing her condition deteriorate, the doctor asked Sue to relieve Johnsy from all worries, otherwise, her medicines wouldn’t respond to her illness. Sue tried her best to cheer up Johnsy, but she took no interest in the surroundings. She was non-responsive to any of Sue’s efforts. One day, while Johnsy was lying on her bed, she noticed an ivy plant through the window that was gradually losing all its leaves. Seeing the bare condition of the tree, Johnsy said that she would

  Effects of living in space for too long😱😱   When the human body spends a lot of time in space, it changes. Without gravity pulling on the spine, the body gets 5cm (2in) taller. The body fluids that flow on earth build up in the head. This gives astronauts swollen faces and blocked noses, making food seem tasteless. When astronauts come back to earth, the return of full gravity can make them feel extremely weak.        Long-term exposure causes multiple health problems, one of the most significant being loss of bone and muscle mass. Over time these deconditioning   effects   can impair astronauts' performance, increase their risk of injury, reduce their aerobic capacity, and slow down their cardiovascular system. Brain and Balance: Without the gravity, inner ear's balance system no longer works, which can make astronauts feel seek. Heart: Blood flows more easily, so the heart doesn't need to work so hard. Muscles: Movement is easy when you are weightless and muscles w

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 The Sun:  The sun is a perfect sphere of hot, glowing gas. It is a source of power that lies buried deep in the central core, where a nuclear furnace rages non-stop, turning matter into pure heat and light. Slightly bigger than a typical star, the sun is large enough by volume to swallow 1.3 million earth. It consists of 98.8% of all matter in the solar system and the force of gravity generated by this enormous mass keeps the planets trapped in orbit around it. Seen from Earth the Sun life-sustaining source of light and warmth that shines steadily on us. Closer views, however, reveal a world of astonishing violence its seething surface bursting wost eruption that hurls fiery gases into space. INSIDE THE SUN :  Sun's interior is divided into three distinct layers: the core, the radiative zone, and the convective zone. All three are made solely of gas, but the gas gets hotter and denser towards the center. In the core, the temperature soars to 15 million degrees Celcius (27 million

  Nervous System of Humans : The human body is controlled by a network of living wires called nervous system. While man made wires wires carry power, the cells that make up the nervous system carry information.       The brain, nerves and sense organs make up the body's nervous system. The nervous system carries information around the body in the form of electrical signals. The various parts of the system are in constant communication and continually active. Message stream into the from the senses every split second. At the time, the brain coordinates the exact tension of hundreds of muscles around the body, from the tiny muscles that moves the eyes to the large muscles needed for running.       Your nervous system makes it possible for you to react to the world with the lightening speed. Every moment , electrical signals from your senses shoot along your nervous, racing towards your brain at up to 400 kph (250 mph). Your brain analysis the flood of upcoming information, decides ho