# Block diagram
## MicroSim spec
### Parameters (tunable controls)
- `Block 1 gain` · 0–5 · multiplier of the first stage
- `Block 2 gain` · 0–5 · multiplier of the second stage
- `Input token rate` · 0.1–3 · speed of tokens flowing along the wires
### What animates
Tokens travel along the wires and are scaled as they pass through each block.
### Learning objective
Show how cascaded blocks transform a [[Signal|signal]] as tokens flow through the diagram.
## Links (Wikipedia order)
<!-- injected from _registry/childlinks/Block_diagram.json (2026-07-30T02:09:12Z) -->
`Adaptive_control` · `American_Radio_Relay_League` · `Automation_and_Remote_Control` · `Biotechnology` · [[Black_box]] · `Bode_plot` · `Bond_graph` · `Closed-loop_controller` · `Closed-loop_transfer_function` · `Coefficient_diagram_method` · `Control_reconfiguration` · [[Control_theory]] · `Controllability` · `Diagram` · `Digital_control` · [[Digital_signal_processing]] · `Distributed_control_system` · `Distributed_parameter_system` · [[Electric_motor]] · [[Electrical_engineering]] · `Embedded_system` · `Energy-shaping_control` · [[Formal_system]] · `Fourier_transform` · `Fractional-order_control` · [[Frequency_response]] · `Function_block_diagram` · `Functional_flow_block_diagram` · [[Fuzzy_control_system]] · `Fuzzy_logic` · `H-infinity_loop-shaping` · `Hankel_singular_value` · `Hardware_architecture` · `Hybrid_computer` · `IEC_61131-3` · `Industrial_control_system` · `Integrated_circuit_layout` · `Intelligent_control` · [[Kalman_filter]] · `Krener's_theorem` · [[Laplace_transform]] · `Lead–lag_compensator` · `Least_squares` · [[Lyapunov_stability]] · [[Mechatronics]] · `Microsoft` · `Minor_loop_feedback` · [[Model_predictive_control]] · `Motion_control` · [[Negative_feedback]] · `Nonlinear_control` · [[Observability]] · `Operating_system` · [[Optimal_control]] · [[PID_controller]] · [[Perceptual_control_theory]] · `Performance` · [[Positive_feedback]] · `Printed_circuit_board` · [[Process_flow_diagram]] · `Programmable_logic_controller` · [[Quantization_(signal_processing)]] · `Radio` · [[Real-time_computing]] · `Reliability_block_diagram` · [[Robotics]] · `Robust_control` · `Root_locus_analysis` · `SCADA` · `Servomechanism` · [[Signal-flow_graph]] · `Software_design` · `Stability_theory` · `State-space_representation` · `State_observer` · `Steady_state` · `Stochastic_control` · [[System]] · [[System_dynamics]] · [[System_identification]] · `Systems_Biology_Graphical_Notation` · [[Transfer_function]] · `Visual_language` · `Windows_2000` · [[Z-transform]]
## From the Real GENERATIVE library
*Block diagram — placed from the Real G.E.N.E.R.A.T.I.V.E. course library (Engineering room). Source: Wikimedia Commons (via Wikipedia article media). [Details & license](https://commons.wikimedia.org/wiki/File:Windows_2000_architecture.png).*
> A block diagram is a diagram of a system in which the principal parts or functions are represented by blocks connected by lines that show the relationships of the blocks.[1] They are heavily used in engineering in hardware design, electronic design, software design, and process flow diagrams. ([Wikipedia](https://en.wikipedia.org/wiki/Block_diagram))
<!-- REAL-GENERATIVE-MEDIA:END -->
> p5.js MicroSim stub · part of Systems Engineering · [Wikipedia source](https://en.wikipedia.org/wiki/Block_diagram)
## Concept summary
A block diagram is a diagram of a [[System|system]] in which the principal parts or functions are represented by blocks connected by lines that show the relationships of the blocks. They are heavily used in [[Engineering|engineering]] in hardware design, electronic design, software design, and process flow diagrams.
## Build checklist
- [ ] Claim it: set `status: in-progress` + `lease` + `leased_at`
- [ ] Write the child page explaining the concept (tie it back to Systems Engineering)
- [ ] Finalize parameter ranges and defaults
- [ ] Implement the p5.js sketch (drawing + control regions)
- [ ] Add caption + the learning objective on the page
- [ ] Set `status: done`
## p5.js sketch
```javascript
// MicroSim: Block diagram
const ARTICLE = "Block_diagram";
let p1, p2, p3;
function setup() {
createCanvas(720, 520);
pixelDensity(2);
// block-diagram sim — create the three sliders described above:
// Block 1 gain (0–5), Block 2 gain (0–5), Input token rate (0.1–3).
// TODO: build labelled sliders in the control region (below the drawing region).
}
function draw() {
background(248);
// TODO: read p1/p2/p3; render the block-diagram in the drawing region and respond live.
// TODO: HUD — title + en.wikitube.io/wiki/Block_diagram + control hints + live readouts.
}
```
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Back to Systems Engineering
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## Semiotic profile
> *The semiotic universals this article invokes, machine-derived from the crossref — **unverified** (born so). Populated 2026-07-06 for the Systems room.*
**Universals (4):** 🟡 system (6) · 🟢 flow (3) · 🟢 signal (2) · 🟢 transformation (1)
**Enter by sign:** Systems Semiotic Gateway · Alphabetum · Icon Registry · ← Systems Portal
<!-- SEMIOTIC-PROFILE:END -->
<!-- REAL-GENERATIVE-MEDIA:START -->
## Wikipedia : Wikitube
**Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Block_diagram) : [Wikitube](https://en.wikitube.io/wiki/Block_diagram)
## Previous hub tags
Tree parents: [[Control_theory]] · [[Reliability_engineering]] · [[Systems_engineering]].
Legacy hubs: none.
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*Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*