1. All disk files were contiguous disk blocks, thus there was no fragmentation. 2. For example, the IBM 350 disk drives were called " disk files ". 3. First, a vocabulary disk file needed to be created with a . voc extension. 4. The division was behind on a contract to deliver disk files to General Electric. 5. Disk files can be opened sequentially, by index, or relatively ( by record number ).6. The output is written to the new disk file . 7. Cams and levers and drive belts are replaced by source-code statements and subroutines and disk files . 8. The shared disk file system allows multiple computers to access the same volume at block level. 9. In Unix tradition the input stream can be changed, so input can come from a disk file . 10. Initially paper tape and cards were used for input and output, later magnetic tape and finally disk files .
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