The Los Angeles Public Library stores thousands of index cards with staff reviews of books dating back to the 1920s. A librarian explains how they were used and what we can learn from them today.
The new VPX-3U-SP-PSC family of power supply cards provides up to 600W total output power in a small package the size of an index card. Teledyne Micropac’s COTS power cards, designed for 3U Open VPX ...