mods.ItemStages.addItemStage("computers", <computercraft:computer>);
mods.ItemStages.addItemStage("computers", <computercraft:peripheral>);
mods.ItemStages.addItemStage("computers", <computercraft:peripheral:3>);
mods.ItemStages.addItemStage("computers", <computercraft:peripheral:2>);
mods.ItemStages.addItemStage("computers", <computercraft:printout>);
mods.ItemStages.addItemStage("computers", <computercraft:printout:1>);
mods.ItemStages.addItemStage("computers", <computercraft:printout:2>);
mods.ItemStages.addItemStage("computers", <computercraft:disk>);
mods.ItemStages.addItemStage("computers", <computercraft:treasure_disk>);
mods.ItemStages.addItemStage("computers", <computercraft:turtle>);

mods.ItemStages.addItemStage("internet", <computercraft:peripheral:1>);
mods.ItemStages.addItemStage("internet", <computercraft:cable:1>);
mods.ItemStages.addItemStage("internet", <computercraft:cable>);

mods.ItemStages.addItemStage("avanced_computers", <computercraft:computer:16384>);
mods.ItemStages.addItemStage("avanced_computers", <computercraft:peripheral:4>);
mods.ItemStages.addItemStage("avanced_computers", <computercraft:advanced_modem>);