which identify the bar code concerned for the user and indicate a specific function or action which the apparatus can execute the microcomputer of the apparatus is programmed to recognize and identify each individual one of the bar codes on the sheet 30 and when reading bar codes the microcomputer generates individual data for each read bar code and stores these data in the read sequence the user may enter several bar codes in a user defined sequence this is done by moving the read device of the apparatus across selected bar codes one at a time while the apparatus is in record mode the user may hereby make up an individual program of actions to be executed when the user has entered the desired sequence he presses a stop button 14 the entire sequence is then stored in the memory of the apparatus and the red led 13 is turned off to execute the entered sequence the user presses a play button 15 and the apparatus then switches to play mode which is indicated in that a green led 16 gives out light the microcomputer of the apparatus will hereby read the entered data one at a time from the memory the memory also stores instructions corresponding to each of the possible.