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(i). It is very fast, making it useful in emergency situations to relay messages.
(ii). Can be used for distant communication, especially if done over Telephone lines.
(iii). Useful where reading is impossible - can be used by visually disabled people.
(iv). Errors are easily corrected. For example, when used in a washing machine, it can tell you if and when to add more detergent, or the fabric conditioner.
Kavungya answered the question on April 2, 2019 at 06:37
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