1. Basics , Tools , and Techniques
2. Reliable and Effective Room Bugs
3. Building a DTMF Decorder
1. Basics , Tools , and Techniques
p 13-15
difference ระหว่าง resistor vs capacitor
parts-stuffing diagram and soldering iron
Basic electronic components
conductor (wire) – wireจะเป็น uninhibitied path เส้นที่ไม่มียั้ง
p 15
2. Reliable and Effective Room Bugs
3. Building a DTMF Decorder