74HC244

The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Main Content

6502 standalone computer

“A minimal 6502 computer that can be programed machine language without PCs I have developed a minimal 6502 computer that can be programed machine language without PCs. The concept is the following three. (1) Minimize the number of peripheral standard …

The World’s Least Powerful Computer? 1-bit Cpu With The Mc14500b Industrial Control Unit

“I came across this weird chip a few months ago. Designed by Motorola in the 70s, its purpose is to replace the “ladder logic” relays in industrial process control so all it needs to do is make simple decisions based …

Tinku: a Personal Robot

“Tinku is not just a robot; it is a personal robot. It is an all in one package. It can see(computer vision), listen(speech processing), talk and react to the situation. It can express emotions, and the list of …