1. Quiz #1 API - Application Program Interface
GEO – Geostationary Earth Orbit
IEEE – Institute for Electrical and Electronic Engineers
EIA – Electronic Industries Association

2. 2. GEO
D * 2 / C = 22,236 miles * 2 / 186,282 miles per second = sec = s
= (s)
計算公式對可得一半分數。
s 若與 ms 弄錯，酌扣一半分數。

3. 3. LEO
D * 2 / C = 1500*2/300,000 = 0.01 second
10,000 s + 53 s = 10,053 s

4. 4. Infra-red Laptop PDA Handset
Earphone 一般是用 Bluetooth. 除非有找到明確產品，否則不算對。

5. Illustration of RS-232 Start bit Stop bit Same as 0 Not part of data
Otherwise the receiver cannot distinguish between an idle line and an initial 1 bit.
Stop bit
Same as 1
Follows data
2019/7/26 5

6. 5. Voltage of RS-232
See Figure 5.1 (P.58)
-15V for 1
+15V for 0

7. 6. Stop bit
See Figure 5.2 (P.60)
In RS-232
Start Bit: 0
Stop Bit: 1

8. 7. Unix Commands ls – list directory contents
pwd – print working directory
less – similar to “more”, but allows backward movement as well as forward movement. While you are searching a string, it will be highlighted in the context.
gcc – GNU C Compiler

9. 8. Home Directory According to Wikipedia:
On Unix and Unix-like systems, a user's home directory contains all that user's documents and other personal data, including his configuration files.
It is where a user's focus is located upon login in a shell (as visible at the Command line interface prompt or via the "pwd" command).
以上兩個回答只要答出一個就算對。