Integrated Circuits (Ics) are related to which generation of computers ?

In most of the IBM PCs, the CPU, the device drivers, memory, expansion slots and active components are mounted on a single board. What is the name of the board?

An integrated circuit is

What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?

What are the three decisions making operations performed by the ALU of a computer?