While we discuss the way security is provided in an architecture, having a basic understanding of the components in computing equipment is very helpful. This post discusses those components and some of the functions they provide.
CPU
The central processing unit (CPU) is the hardware in the system that executes all the instructions in the code.
Please note: Different Security Modes are not discussed here. For such details, please refer to our previous blog on Security Mode.
Memory
A computing system needs somewhere to store information, both on a long-term basis and a short-term basis.
Input/Output Device
Input/output (I/O) devices are used to send and receive information to the system. Examples are the keyboard, mouse, displays, and printers.
Firmware
Firmware is software that is stored on an EPROM or EEPROM chip within a device. While updates to firmware may become necessary, they are infrequent. Firmware can exist as the basic input/output system (BIOS) on a computer or device firmware.
mrcissp 
Hi Gaurav, many thanks for your CISSP mind maps! I’m taking the exam in late June and find your recaps spot on. Great work advancing the profession. Wishing you the best! Thank you!!
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Thank you for such words. It will keep my moral High.
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Hi Gaurav, many thanks for your CISSP mind maps! I’m taking the exam in late June and find your recaps spot on. Great work advancing the profession. Wishing you the best! Thank you!!
Regards, Anand
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Thank you so much Anand for your valuable words. 🙂
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