Answer:
DDR: DDR stands for Double Data Rate.
GWBASIC: The full form of GW-BASIC is Graphics and Windows Beginner‘s All-Purpose Symbolic Instruction Code.
What is DDR? - It is a technique in computing with which a computer bus transfers data at double the rate sending data at rising and falling edges of a clock cycle. This method allows for sending 2 signals per clock cycle.
What is GWBASIC? - GW-BASIC is a dialect of the BASIC programming language developed by Microsoft from IBM BASICA. Functionally identical to BASICA, its BASIC interpreter is a fully self-contained executable and does not need the Cassette BASIC ROM found in the original IBM PC.