NM27C040Q-120 Eprom Fairchild and various manufacturers refurbished Eproms that have been machine cleaned and legs straightened, and programmer verified blanked and erased so they are completely ready to program. 4,194,304-words x 8-bit High Performance CMOS Eprom that is UV Erasable and programmable read only memory 512Kx8 (512K) 32 pin Dip-32 package. These are used in many older 80’s, 90’s and newer game boards and contact us if you need programming. Most are 120ns and faster. These 27C040 eproms can replace the 27C4001 eproms. These refurbished chips look so nice you would almost think they were NOS.