公开(公告)号：US3471853A

公开(公告)日：1969-10-07

申请号：US3471853D

申请日：1966-02-23

Applicant: IBM

Inventor： BROOKS EVERETT G ,  MCCULLOUGH JOHN W

IPC: C08F2/00 ,  H03M1/00 ,  H04L3/00 ,  H03K13/00

CPC classification number: H03M1/00 ,  H03M1/22

公开(公告)号：US3598973A

公开(公告)日：1971-08-10

申请号：US3598973D

申请日：1969-01-13

Applicant: IBM

Inventor： BROOKS EVERETT G ,  KAUS ROGERT D

IPC: G06Q20/20 ,  G07G1/12 ,  G06F7/48

CPC classification number: G07G1/12 ,  G06Q20/207 ,  G06Q40/02

Abstract: A computer including a register containing an initially proposed trial value of sales tax for a given actual sales price, a tax matrix to determine the cutoff sales price for that trial tax, a subtractor for determining if the actual sales price is larger than the cutoff sales price, logic elements for repetitively proposing the next higher trial value if the actual sales price is larger, means to use the calculated tax if the actual sales price is not larger, and means to compute the tax as a percentage of the sales price if the highest programmed trial tax is smaller than the actual tax.

公开(公告)号：US3521269A

公开(公告)日：1970-07-21

申请号：US3521269D

申请日：1965-12-20

Applicant: IBM

Inventor： BROOKS EVERETT G ,  GENTELIA JOHN S

IPC: H03M1/00 ,  H03K13/02

CPC classification number: H03M1/48