1. A method of displaying test data for a device, said method comprising: receiving a first device test file, wherein said first device test file includes a first plurality of bits; receiving a second device test file, wherein said second device test file includes a second plurality of bits; generating a first graphic image representative of said first device test file by depicting each of said first plurality of bits using a unique pixel of a display; generating a second graphic image representative of said second device test file by depicting each of said second plurality of bits using a unique pixel of a display; and overlaying said second graphic image onto said first graphic image.