The transistors are only slightly larger than those resistors, but they have 3 leads rather than 2. You would connect the base lead to the '595 output pin, the emitter to the led row and the collector to 5V.
The transistors are only slightly larger than those resistors, but they have 3 leads rather than 2. You would connect the base lead to the '595 output pin, the emitter to the led row and the collector to 5V.