Routers usually, if not always, include a firewall. This is the only device I know of.
A firewall can be either hardware or software
Usually software but some hardware firewall devices are produced.
That sounds like a firewall.
One can protect their computer hardware devices by installing a firewall in order to prevent any malicious activity to be sent to ones computer. Without a firewall one runs the risk of receiving a virus through email or even by visiting certain websites.
Hardware devices are devices like pen drives, DVD, CD ect!!
Non-computing devices.
Hardware innovations refer to advancements in physical technology components, such as processors, memory, sensors, and displays. These innovations can include improvements in performance, efficiency, size, and functionality of hardware devices. Examples include faster processors, longer-lasting batteries, and new sensor technologies.
A scanner is both hardware and software, the device itself is hardware (all devices are hardware) but the driver(a program) that runs it is software.
pointing devices are: mouse,light pen & joy stick in computer hardware
Input Devices
A firewalll is hardware or software that prevents hackers or malicious software from getting into your computer without your knowledge.
A router A firewall