Explain ‘sequential’ and ‘mnemonic’ Codes
Sequential codes are those codes in which the numbers or letters are arranged in a consecutive order.These types of codes are mostly applied in source documents such as cheques, invoices.
It also helps in document search by tracking a relevant document based on the code or by identifying the missing codes in a document based on the numbers.
Mnemonic codes are those codes that consist of alphabets or abbreviations as symbols for codifying a piece of information. E.g. HQ for headquarters, DLI for Delhi in train bookings.