The 8088 was the first IBM PC which worked at about?

The 8088 was the microprocessor used in the original IBM PC, released in 1981. It operated at clock speeds of 4.77 MHz, which was relatively slow by modern standards. The 8088 featured a 16-bit data bus and an 8-bit external data bus, allowing it to handle a variety of tasks suitable for early personal computing. Its architecture laid the groundwork for future generations of x86 processors.