Simulation of data-switching systems on a digital computer

Since 1941 automatic data-message-switching systems using teletypewriter techniques have been widely used to transmit messages from each of a multiplicity of sources to destinations in accordance with address codes included in each message.1 Existing systems have increased in size and complexity along with the business operations which they serve. Future data-message-switching systems show promise of being even larger and more complex, and of operating at much higher speeds.