Sequential control system

A sequential control system for sequentially controlling corresponding loads operations in accordance with a predetermined process, and comprises;

• first means for storing control informations, each of which includes first, second and third control, signals and is sequentially read out by an address signal applied to said first means, said first control signals each being capable of containing n input control informations at a maximum, where n is a positive integer greater than one, and said second control signals serving to control the operations of the loads,
• second means including n first AND gates, each of which is operatively connected to said first means for receiving both the input control information therefrom and external input signals from the outside of said control system to produce a logic output at its output terminal, and said second means, during one operational cycle, receiving m input control informations from said first means through the first AND gates, where m is a positive integer greater than one and has a relationship to n under three kinds of conditions, that is, m=n, m <
• n, and m >
• n,
• third means including a second AND gate having n input terminals connected respectively to the n output terminals of said n first AND gates to receive the logic outputs therefrom and then producing a logic output at its output terminal,
• fourth means comprising n third AND gates, each of which is operatively connected to both said first means and the output terminal of said third means to receive, from the former, said second control signals and, from the latter, the logic output and then producing a logic output at its output terminal in order to control the operation of the load connected thereto.