| 摘要 |
PURPOSE:To attain high speed and low power consumption by constituting that a current flows only to a circuit selected in each row or column of a transistor (TR) matrix to reduce the number of circuits to which the current flows into a number raised to half of the conventional number and increase the current value flowing to one circuit by the share. CONSTITUTION:Since a voltage of 1.2V is impressed between a base of a pnp TR37 of a selected row and a power supply terminal VE, the TR37 is turned on in this case and a current flows. This current flows via a TR (TRs connected to the selected column) having the lowest base voltage in pnp TRs 38 connected to the collector of an OFF-TR37. That is, the current flows to the pnp TR37 at the selected row and a pnp TR38 at the cross point between the selected row and column only, and only the collector voltage of the selected TR38 becomes a high level by the voltage drop's share of a resistor Rc. |
