The kids in the Explorers Club were encouraged to do projects, and Jobs decided to build a frequency counter, which measures the number of pulses per second in an electronic signal. He needed some parts that HP made, so he picked up the phone and called the CEO. "Back then, people didn’t have unlisted numbers. So I looked up Bill Hewlett in Palo Alto and called him at home. And he answered and chatted with me for 20 minutes. He got me the parts, but he also got me a job in the plant where they made frequency counters." Jobs worked there the summer after his freshman year at Homestead High. "My dad would drive me in the morning and pick me up in the evening." His work mainly consisted of "just putting nuts and bolts on things" on an assembly line. There was some resentment among his fellow line workers toward the pushy kid who had talked his way in by calling the CEO. "I remember telling one of the supervisors, 'I love this stuff, I love this stuff,' and then I asked him what he liked to do best. And he said, 'To fuck, to fuck.'" Jobs had an easier time ingratiating himself with the engineers who worked one floor above. "They served doughnuts and coffee every morning at ten. So I’d go upstairs and hang out with them."