Fourth-generation computers, developed in the 1970s and 1980s, are characterized by their use of microprocessors. These computers are smaller, faster, and more efficient than their predecessors, which included third-generation computers that relied on integrated circuits. The introduction of microprocessors allowed for the creation of personal computers, making technology more accessible to individuals and businesses. These computers also feature advanced software and programming languages, such as C and Pascal, which enable more complex applications. The development of graphical user interfaces (GUIs) further enhanced user interaction, allowing people to operate computers with ease. Fourth-generation computers laid the foundation for modern computing technology.