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Importance of Physical Exercise according ot age and sex

Importance of Physical Exercise according ot age and sex According to Age: Physical education is applicable for people of all ages. But programmes of physical education differ likings and dislikings for different age-groups. Not only physical exercise but also food, likings and dislikings and physical abilities are different for different age-groups. For example, physical ability of children is not equal to that of adults.  So to develop the abilies exercise through games should be introduced accordingly. Frog jumps, touch and back, crow jump or recreational games are some physical activities that can improve physical ability of children. Selection of exercise and games for adolescent should be done systematically. Standing in a line, exercise of hands and legs, running with a ball, touch and play, etc. and games and physcial exercise can be used to develop physical abilities of children. Remember, children and adolescents should not participate in weight lifting exercise. It causes h

Hardware and software

Computer systems are now commonplace in every part of our daily life. This chapter introduces the basic components that make up these computer systems; most of these will be described in much greater depth in later chapters. Comparing books with computers is a good analogy: the actual pages and the ink used on the pages are equivalent to the hardware used to make up these computers; the words written on these pages are equivalent to the software. Without the words, the book is useless. Similarly, without software, computers would be of little use to any of us. 

Hardware is a general term for the physical components that make up a computer system, for example, keyboard, mouse, monitor, processor, circuit board, and so on. 

Software is a general term for the programs that control the computer system.

There are two types of software:
  • Systems software: programs that allow the hardware to run properly, e.g. operating systems
  • Applications software: programs that allow the user to do specific tasks, e.g. spreadsheets.


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