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,
(d) It encourages savings of labor.
(e) These machines are simple to operate and are portable.
(f) The use of this machine is economical.