The Mockingboard is a sound card built by Sweet Micro Systems for the Apple II series of microcomputers. It improves on the Apple II's limited sound capabilities, as did other Apple II sound cards.
Mockingboard v1 clone
Korean Mockingboard clone
A sound card is an internal expansion card that provides input and output of audio signals to and from a computer under the control of computer programs. The term sound card is also applied to external audio interfaces used for professional audio applications.
Close-up of a sound card PCB, showing electrolytic capacitors, SMT capacitors and resistors, and a YAC512 two-channel 16-bit DAC. The integrated circuit on the left is a 3403 single power supply quad operational amplifier.
8-channel DAC Cirrus Logic CS4382 placed on Sound Blaster X-Fi Fatal1ty
A VIA Technologies Envy sound card for PC, 5.1 channel for PCI slot
Three early ISA (16-bit) PC sound cards showing the progression toward integrated chipsets