Inglés: 
| 
Component/Activity | 
Description | 
Cost Item | 
| 
Materials | 
12 Leeds | 
$14 | 
|  | 
12
  resistances | 
$12 | 
|  | 
Female and male for parallel port | 
$140 | 
|  | 
1 Buzzer | 
$40 | 
|  | 
1 Protoboard | 
$120 | 
|  | 
Circuit 245 and 04 | 
$43 | 
| 
Consumables | 
Silicon  | 
$45 | 
|  | 
White, orange and Brown paint | 
$113 | 
| 
Bought-in parts | 
Tripay
  (60x40) | 
$110 | 
| 
Equipment buy/hire | 
cutter | 
$53 | 
|  | 
soldering | 
$25 | 
|  | 
Cut tool | 
$300 | 
| 
Travel/ subsistence | 
passage | 
$300 | 
| 
Other | 
--- | 
--- | 
|  |  | 
Total costs 
  $1315 | 
 























