An electronic memory device tester has an input arranged to receive seed data with a first number of seed data bits from a computer and a data generator arranged to receive an array of prepared data having a second number of prepared data bits, where q>p, and arrange to generate from the prepared data a test data pattern for writing to an electronic memory device to be tested. The earliest deformer of the sequence affected by a changed animation variable is designated the cached deformer, and the input to this deformer is stored for future use. Also, a support roller and a compensation roller contact the web of print media. The pre-paid telephone calling card processing system is also configured to receive a request to make an outbound telephone call in relation to the pre-paid telephone calling card during an access call over the telephone network and to cause the personal greeting to be played back automatically during the access call.