A calculating machine is a machine, which performs the job of multiplication, division and calculation. These machines can be operated electrically or manually. These machines are commonly known as calculators. The advantages of these machines are:
(a) This machine gives less mental strain on workers.
(b) This machine saves time and thereby enables the work to be done quickly and efficiently.
(c) These machines are non-listing and designed to add, subtract, multiply and divide mathematical calculations,
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(d) It encourages savings of labor.
(e) These machines are simple to operate and are portable.
(f) The use of this machine is economical.