diff --git a/2_vcs_comp/ReadMe.md b/2_vcs_comp/ReadMe.md
index 72d9e10..7bbb991 100644
--- a/2_vcs_comp/ReadMe.md
+++ b/2_vcs_comp/ReadMe.md
@@ -20,6 +20,132 @@ make all LAB=1 GENLIB=1
 make all LAB=1 GENLIB=0
 ```
 
+## 实验框架
+
+### 实验一
+
+```mermaid
+flowchart LR
+	tb["testbench1"]
+    dut["top"]
+    tb --> dut 
+    dut --> ca
+    dut ----> cb
+    dut ------> cc
+    tb -.第一次.-> namea
+    tb -.第二次.-> namea
+    tb -.第二次.-> nameb
+    tb -.第二次.-> namec
+	subgraph ca[counter_a]
+    	direction LR
+    	namea["name = counter_a"]
+    	agea["age = 10"]
+    end
+	subgraph cb[counter_b]
+    	direction LR
+    	nameb["name = counter_b"]
+    	ageb["age = 11"]
+    end
+    subgraph cc[counter_c]
+    	direction LR
+    	namec["name = counter_c"]
+    	agec["age = 12"]
+    end
+```
+
+
+
+### 实验二
+
+```mermaid
+flowchart LR
+	tb["testbench2"]
+    dut["top"]
+    tb --> dut 
+    dut --> ca
+    dut ----> cb
+    dut ------> cc
+    tb -.第一次.-> namea
+    tb -.第二次.-> agea
+	subgraph ca[counter_a]
+    	direction LR
+    	namea["name = counter_a"]
+    	agea["age = 10"]
+    end
+	subgraph cb[counter_b]
+    	direction LR
+    	nameb["name = counter_b"]
+    	ageb["age = 11"]
+    end
+    subgraph cc[counter_c]
+    	direction LR
+    	namec["name = counter_c"]
+    	agec["age = 12"]
+    end
+```
+
+### 实验三
+
+```mermaid
+flowchart LR
+	tb["testbench3"]
+    dut["top"]
+    tb --> dut 
+    dut --> ca
+    dut ----> cb
+    dut ------> cc
+    tb -.第一次.-> namea
+    tb -.第一次.-> agea
+    tb -.第二次.-> namea
+	subgraph ca[counter_a]
+    	direction LR
+    	namea["name = counter_a"]
+    	agea["age = 10"]
+    end
+	subgraph cb[counter_b]
+    	direction LR
+    	nameb["name = counter_b"]
+    	ageb["age = 11"]
+    end
+    subgraph cc[counter_c]
+    	direction LR
+    	namec["name = counter_c"]
+    	agec["age = 12"]
+    end
+```
+
+### 实验四
+
+```mermaid
+flowchart LR
+	tb["testbench4"]
+    dut["top"]
+    tb --> dut 
+    dut --> ca
+    dut ----> cb
+    dut ------> cc
+    tb -.第一次.-> namea
+    tb -.第二次.-> namea
+    tb -.第二次.-> agea
+	subgraph ca[counter_a]
+    	direction LR
+    	namea["name = counter_a"]
+    	agea["age = 10"]
+    end
+	subgraph cb[counter_b]
+    	direction LR
+    	nameb["name = counter_b"]
+    	ageb["age = 11"]
+    end
+    subgraph cc[counter_c]
+    	direction LR
+    	namec["name = counter_c"]
+    	agec["age = 12"]
+    end
+```
+
+
+
 ## 结论
 
 | 序号 | 条件                                                  | 现象    | 结论                         | 备注 |