| Design change Example: moving the tape past the head at high speed. 1) improvements in magnetic tape and use of helical scanning 2) spinning the head at a high speed 3) aligning the head at an angle to the tape 4) recording information in slanted tracks 5) àll these improvements 6) the inclusion of a timer | Result The transport mechanism had to be built to a high specification. a) The information was laid down as a series of slanted tracks. b) The modern VCR could be produced. ñ ) Far more data could be crammed into a smaller area. d) Recordings could be made and viewed at a later date. å) The rate at which the data could be stored or retrieved was increased. f) The cassette tape could be narrower and the tape could move at a slower speed. |