Worksheet 1.5.9: Number Systems Exercises

1. 1. Decimal: base 10
   2. Binary: base 2
   3. Hexadecimal: base 16
2. Computers use binary but long binary numbers are hard for humans to remember or work with without making mistakes. Hex is easier for humans to work with.
3. 1. 123
   2. 7
   3. 240
   4. 170
   5. 85
   6. 147
   7. 57
   8. 255
   9. 213
   10. 128
4. 1. 1 0111
   2. 1000 0011
   3. 11
   4. 1110 1010
   5. 100 1111
   6. 1100 0111
5. 1. 10
   2. 83
   3. 3
   4. EA
   5. 41
   6. FF
6. 1. 39
   2. 170
   3. 3
   4. 241
   5. 577
   6. 597

Worksheet 1.6.6: Lab Safety Checklist

1. 1. system unit
   2. technician's tools
   3. testing equipment
   4. ESD prevention equipment
2. 20 - 50
3. non-conductive
4. electrical, electronics
5. dust, dust, dust
6. lamp, fluorescent
7. temperature, Temperatures
8. grounded