| 摘要 |
The invention relates to a main board (HP) for a computer system, in particular for a desktop PC, which main board (HP) is electrically connected to a tone generator (TG) for emitting tone signals, in particular to a piezo sound transducer. The main board (HP) has a first tone-generating circuit (TES1), which is designed to generate a first control signal for the tone generator (TG). Furthermore, the main board (HP) has a second tone-generating circuit (TES2), which is designed to generate a second control signal for the tone generator (TG). The main board (HP) also has a logic circuit (LS), which is electrically coupled via a first signal line (SL1) to the first tone-generating circuit (TES1) and via a second signal line (SL2) to the second tone-generating circuit (TES2) and is designed to transmit the first control signal or the second control signal to the tone generator (TG). The invention further relates to a computer system having such a main board. |
