digital ic การใช้

Boolean algebra, minimization of Boolean functions; logic gates digital IC families ( DTL, TTL, ECL, MOS, CMOS ).
Similarly digital ICs and Boundary Scan circuits require proper IC package orientation as a 90? 180?and 270?orientation will improperly connect the IC package pins to the PCB, creating a defect.
Although the languages and tools have evolved, this general approach of specifying the desired behavior in a textual programming language and letting the tools derive the detailed physical design remains the basis of digital IC design today.
On January 20, 1959, Fairchild managers met with Edward Keonjian, the developer of the onboard computer for the rocket " Atlas ", to discuss the joint development of hybrid digital ICs for his computer.
Digital ICs ( with full access but with no Boundary Scan ) can be tested for shorted pins, but opens ( especially on input pins ) may not be detectable, depending on the quality of the test performed.