[Example] Computer Layers (#207)

* Add computer layers

* Update PR number

* Fix typos

Author: pearmini

app/examples/computer-layers.recho.js

@@ -0,0 +1,59 @@
+/**
+ * @title Computer Layers
+ * @author Bairui Su
+ * @created 2026-01-02
+ * @github pearmini
+ * @pull_request 207
+ * @thumbnail_start 36
+ * @label Beginner
+ */
+
+/**
+ * ============================================================================
+ * =                            Computer Layers                               =
+ * ============================================================================
+ *
+ * > Computers can be seen as layers of technology, with increasing complexity and
+ * > abstraction as they go up. Programming can happen at different layers.
+ *
+ * - By Everest Pipkin, 2020
+ * - Ref. https://ifyoulived.org/fuzzy/#I%20-%20Computers%20were%20humans
+ */
+
+const layers = [
+  "Application",
+  "Algorithm",
+  "Programming Language",
+  "Assembly Language",
+  "Machine Code",
+  "Instruction Set Architecture",
+  "Microarchitecture",
+  "Gates/Registers",
+  "Device (Transistors)",
+  "Physicals",
+];
+
+//➜ +-----+--------------------------------+
+//➜ | {0} |                  "Application" |
+//➜ |-----|--------------------------------|
+//➜ | {1} |                    "Algorithm" |
+//➜ |-----|--------------------------------|
+//➜ | {2} |         "Programming Language" |
+//➜ |-----|--------------------------------|
+//➜ | {3} |            "Assembly Language" |
+//➜ |-----|--------------------------------|
+//➜ | {4} |                 "Machine Code" |
+//➜ |-----|--------------------------------|
+//➜ | {5} | "Instruction Set Architecture" |
+//➜ |-----|--------------------------------|
+//➜ | {6} |            "Microarchitecture" |
+//➜ |-----|--------------------------------|
+//➜ | {7} |              "Gates/Registers" |
+//➜ |-----|--------------------------------|
+//➜ | {8} |         "Device (Transistors)" |
+//➜ |-----|--------------------------------|
+//➜ | {9} |                    "Physicals" |
+//➜ +-----+--------------------------------+
+for (let i = 0; i < layers.length; i++) {
+  echo.key(i)(layers[i]);
+}