Flowchart Symbols and Logic Gates

Represents a process, action, or function in a flowchart.

Represents the start, end, or potential outcomes in a flowchart path; often contains 'Start' or 'End'.

Represents input or output specifically related to a document (e.g., report, email).

Represents a question that needs a yes/no or true/false answer, branching paths in the flowchart.

Connects separate elements within the same page of a complex flowchart.

Connects elements across multiple pages in a complex flowchart, often with page numbers.

Represents data available for input or output, or resources used/generated in a flowchart.

Adds explanation or comments within a specific range of a flowchart, connected by a dashed line.

Represents data housed on a storage service, used for searching and filtering.

Indicates a segment of delay within a process; shows the exact length of the delay.

Indicates the process flow continues down two or more paths.

Indicates where information is displayed within a process flow.

Indicates data is stored within a hard drive, also known as direct access storage.

An electronic circuit that performs logical operations based on inputs to produce a HIGH (1) or LOW (0) output.

Performs logical multiplication; output is HIGH (1) only if all inputs are HIGH (1).

Output is HIGH (1) if any input is HIGH (1).

Basic logic gate with single input and output; inverts the input.

NOR gate takes two or more inputs, gives only one output.

Inverts the result of an AND gate, produces high unless both are high.

Output is HIGH (1) only when its two inputs are dissimilar. Also called exclusive OR gate.

Your device's name set by the Operating System

Your device's physical identifier based on its hardware.

Device's/website's logical identifier as seen on your network.

Converts IP Addresses to words that can be read by humans.

Part of an IP address given by your Network Provider

Part of IP address set by your router

An IP that has the largest scope

IPs that have been reserved for experimental purposes

Original Internet addressing system using 32-bit addresses.

Newer Internet Protocol using 128-bit addresses, improving on IPv4.

Allows use of both IPv4 and IPv6 at the same time.

Sends IPv6 data through an IPv4 network.

A network security device monitoring traffic based on a defined set of rules; accepts, rejects, or drops traffic.

Allowing the traffic.

Block the traffic but reply with an "unreachable error".

Block the traffic with no reply

Packet-filtering technology checked external connections before reaching internal networks.

A firewall that vetted ongoing connections without reauthorizing each data packet.

The first commercially available application-layer firewall, based on earlier DEC work.

Monitors outgoing and incoming packets and allowing them to pass or stop based on source and destination IP address, protocols, and ports.

Determines the connection state of packet.