74LS194 4-bit Bi-directional Shift Register (pack of 10)

This bidirectional shift register is designed to incorporate virtually all of the features a system designer may want in a shift register; they feature parallel inputs, parallel outputs, right-shift and left-shift serial inputs, operating-mode-control inputs, and a direct overriding clear line. The register has four distinct modes of operation, namely:

Parallel (broadside) load

Shift right (in the direction QA toward QD)

Shift left (in the direction QD toward QA)

Inhibit clock (do nothing).