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Across
  1. 5. could sum up to 8 figures long
  2. 6. its invention resulted to smaller, faster, more reliable, and more energy-efficient computers.
  3. 7. is a collection of programs (set of instructions)
Down
  1. 1. father of computers
  2. 2. One of the popular operating systems
  3. 3. the physical tangible component of the computer system
  4. 4. a programmable machine
  5. 8. first device to carry calculations