Mark-1 Computer Features: 1. The world's first automatic electromechanical computer. 2. It could perform many complex mathematical tasks in addition to addition , subtraction , multiplication , division and trigonometric functions. 3. It is 51 feet long , 6 feet long and weighs about 5 tons. 4. Mark-1 used 6,75,000 different parts and hundreds of miles of wire . 5. Mark-1 would read his instructions from the punch paper tape and immediately after performing the instructions. Read the next one.