Watson defeated human Jeopardy! champions using methods. cognitive numerical hardwired brute force Question 2 Clock speeds in today's microprocessors are measured in: kilohertz. megahertz. gigahertz. terahertz. In 1948 John Bardeen, Walter Brattain, and William Shockley invented the: ENIAC. vacuum tube. electronic valve. transistor. Question 4 Which of the following is a computer that used second-generation (transistor) technology? IBM 360 Atanasoff-Berry computer PDP-1 Cray-1 The level of the computer hierarchy that is composed of gates and wires is the: control level. machine level. system software level. digital logic level. Question 6 The ENIAC was originally built in order to speed up calculations for: systems of linear equations. weather forecasting. ballistics tables. chess playing