The CPU is housed on a silicon chip that contains millions of switches and circuits. It has millions of Transistors
4billion
on the order of a billion
Yes it is!
A modern micro processor has atleast 100 million transistors. The Core i7 920 (D0 stepping) has approximately 781 million transistors.
As of the end of 2016, high end multicore microprocessors have from 3,000,000,000 to 8,000,000,000 transistors. But there are plenty of other medium range microprocessors and microcontrollers with much fewer transistors being manufactured.
An 18-core Xeon Haswell-E5 has 5,560,000,000 transistors.
A CPU can do one thing per processor that the computer contains
Yes, today's computers use transistors and microprocessors. Smaller transistors subset the amount of RAM that is local to the CPU at any given moment.
A Pentium 4 contains 42 million transistors. Forty-two million transistors isn't very many--the highest-end Itaniums and Xeons have nearly two BILLION transistors.
Every electronic devices contains transistors.A telephone consists of transistors.
A CPU contains a control unit and an arithmetic/logic unit