Editing VT52 (section)

=== Block mode versions ===
The '''VT61''' and '''VT62''' were [[Block-oriented terminal|block-mode terminals]]. The VT62 was to be used in conjunction with TRAX, a transaction processing operating system on high-end [[PDP-11]]s. They used the same cabinet but had a more complete custom processor. Application-specific behavior was coded in separate [[Programmable read-only memory|PROM]] memory, using a separate instruction code that the processor interpreted. This unpublished language was to be used to easily develop additional models specific to single Digital marketing organizations. These terminals synthesized a "tock" sound on a speaker for feedback when a key was pressed instead of the relay. Though the keyboards were identical, VT6x users admired the superior "feel".