Final answer:
TCB stands for Trusted Computing Base and refers to the combination of hardware, software, and firmware that provide a secure computing environment. PCB stands for Printed Circuit Board and is a board with conductive tracks used to connect electronic components.
Step-by-step explanation:
TCB stands for Trusted Computing Base. It refers to the combination of hardware, software, and firmware that is used to provide a secure computing environment. The TCB includes the operating system, security protocols, and system applications that work together to protect the integrity of the system.
PCB stands for Printed Circuit Board. It is a board made of non-conductive material with conductive tracks on it to connect various electronic components. PCBs are commonly used in electronic devices such as computers, smartphones, and televisions.