PROCEDURE SYSTEM FOR USE OF COMPUTER

PURPOSE:To surely prevent the outsiders from reading out or altering data by inputting the scheduled date for the next use and at the same time setting a temporary password which is kept valid until the scheduled data when the use of a computer is through. CONSTITUTION:When the processing is through with a desired program, a computer has a question for the date of the next use. While an operator inputs the scheduled date for use to said question and the computer stores the input scheduled date and then has a question for a temporary password which is valid until the scheduled date. The password inputted by the operator is stored in the computer. When the use of the computer is started, the computer checks whether the present date has passed the stored scheduled date or not. If not, the input of the temporary password is required. Then the desired program is possible when the coincidence is obtained between the password inputted from the operator and the stored password.