Update first_lab.md

docs/checklist/first_lab.md

@@ -5,13 +5,10 @@
 
 ### compulsory
 
-[] Learn Git `Y Song, W Wen`   
+[x] Write AA meeting record table and email to AA `Y Song`   
-[] Learn Altium `W Wen`   
+[] Learn Markdown & Git `All`   
-[] Learn Latex `Y Song`
+[x] Find all component models `B Yang`   
-[] List PCB Design pricinples on Blog `B Yang`   
+[x] Build all component models that not provided `B Yang`   
-[] Try PCB Design `B Yang`
-[] Teach Git & Altium `B Yang`
-[] 
 [x] Finish the circuit except the BPF and impedance `B Yang`   
 [] Simulate to get the BPF band range `B Yang, Y Liu`   
 [] Design BPF and insert to circuit `Y Liu`   
@@ -24,3 +21,4 @@
 [x] Design the circuit to be 50ohms `W Wen`   
 [] Simulate the circuit `W Wen`   
 [x] check and order the components we need `Y Liu`  
+