diff --git a/src/logic_sim/mod.rs b/src/logic_sim/mod.rs
new file mode 100644
index 0000000..1a62286
--- /dev/null
+++ b/src/logic_sim/mod.rs
@@ -0,0 +1,81 @@
+use bevy::color::palettes::basic::RED;
+// pub struct Block
+use bevy::prelude::*;
+use bevy::text::TextBounds;
+
+#[derive(Bundle, Debug)]
+pub struct BlockBundle {
+    // name: Text2d,
+    block: Block,
+    transform: Transform,
+    global_transform: GlobalTransform,
+    block_visuals: BlockVisuals,
+}
+
+#[derive(Component, Debug)]
+pub struct BlockVisuals {
+    size: IVec2,
+    color: Color,
+}
+#[derive(Component, Debug)]
+pub struct Block {
+    inputs: Vec<Connection>,
+    outputs: Vec<Connection>,
+}
+#[derive(Debug)]
+pub struct Connection {
+    size: u32,
+    values: Vec<bool>,
+}
+
+pub struct LogicSimPlugin;
+impl Plugin for LogicSimPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_systems(Startup, setup)
+            .add_systems(Update, render_blocks);
+    }
+}
+fn setup(mut commands: Commands) {
+    let size = IVec2::new(50, 40);
+    commands
+        .spawn(BlockBundle {
+            // name: Text2d("AND".into()),
+            block_visuals: BlockVisuals {
+                size,
+                color: Color::from(RED),
+            },
+            block: Block {
+                inputs: vec![Connection {
+                    size: 2,
+                    values: vec![false, true],
+                }],
+                outputs: vec![
+                    Connection {
+                        size: 1,
+                        values: vec![false],
+                    },
+                    Connection {
+                        size: 1,
+                        values: vec![true],
+                    },
+                ],
+            },
+            global_transform: GlobalTransform::default(),
+            transform: Transform::default(),
+        })
+        .with_child((
+            Text2d("AND".into()),
+            TextLayout::new(JustifyText::Center, LineBreak::WordBoundary),
+            TextBounds::from(size.as_vec2()),
+            Transform::from_translation(Vec3::Z),
+        ));
+}
+fn render_blocks(blocks: Query<(&BlockVisuals, &GlobalTransform)>, mut gizmos: Gizmos) {
+    for (block_visual, transform) in blocks.iter() {
+        gizmos.rect_2d(
+            transform.translation().xy(),
+            block_visual.size.as_vec2(),
+            block_visual.color,
+        );
+    }
+}