Ledger:

The ledger is the king of all book accounts because all the transactions and entries from the book of original entry it must be post in ledger book. Ledger has contains classified record of all transactions. A ledger is the principal book or computer file for recording and totaling monetary transactions by account, with debits and credits in separate columns and a beginning balance and ending balance for each account. All transactions is related to cash it must be put in one place and all transactions with a customer or supplier must also be assembled at one place.