PDC is a desktop calculator in the 'bc' style with features designed for programmers. It does not support floating point math, but does provide all the C operators and implements ISO C operator precedence. Additionally, functions are available to assist with 'bit bashing' tasks such as byte swapping and bit scanning.
Program Delivery Control. PDC is a system to make recording a certain program easier. PDC tells the video recorder the exact start and end times of a program even if there has been changes in the programme schedule. Recording will always start at the right time and end at the right time.
rogramme elivery ontrol. A feature of VHS video recorders. A ghost signal is transmitted alongside a television programme that a VCR with PDC can understand. The signal contains programme information. When the VCR is set to record a particular programme, and the PDC feature is active, the VCR will record the programme from the actual start to the actual end only when it receives the ghost signal. It will alter the VCR settings to record the correct programme even if it starts or ends slightly different to the time shown in TV listings.