Computer Architecture e.g. CPU, Memory

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.

System Components CPU
System Component – CPU

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.

System Components Memory & Storage
System Components – Memory & Storage

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. 

System Components I/O Device
System Components – I/O Device

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.

System Components Firmware
System Components – Firmware
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6 thoughts

  1. 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!!

    Liked by 1 person

  2. 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

    Liked by 1 person

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