4位输入，8为输出列阵乘法器，列阵乘法器比之普通的移位乘法器具有更高的速度和更强的并行能力，且进一步升级十分方便。-4 input, 8 for the output array multiplier, array multiplier with higher speeds and greater parallelism than the ordinary shift multiplier, and further escalation is very convenient.