Appendix B: Combined Arithmetic Processes

Mixed Chain Calculation

Obviously, chain calculations can use any arithmetic operator- add and subtract as well as multiply and divide. In addition, a problem may be calculated with any combination of arithmetic operators in both nested and linked operations. For example, to calculate
(((12 × 5)2) + ((8÷2) + 10)) × (213.08 × 5 ÷ 1.33) ÷ 2
 Enter:  See Displayed:  
 
12 SAVE  5 ×   
  60.00
   
 
2    
  58.00
   
 
8 SAVE  2 ÷   
  4.00
   
 
10 +   
  14.00
   
 
+   
  72.00
   
 
213.08 SAVE  5 ×   
  1065.40
   
 
1.33 ÷   
  801.05
   
 
×   
  57675.79
   
 
2 ÷   
  28837.89
   
Review the stack:
 
PressSeeRemarks
 12   12.  12 is keyed into X.
 SAVE    12.00  12 is loaded into X and Y.
 5   5.  5 is keyed and loaded into X; previous contents (12) are destroyed.
 ×   60.00  Contents of X (5) and Y (12) are multiplied then contents are destroyed: result (60) is loaded into X.
 2   2.  2 is keyed and loaded into X, 60 is loaded into Y.
    58.00  Contents of X (2) are subtracted from contents of Y (60) then contents are destroyed; result (58) is loaded into X.
 8   8.  8 is keyed into X, 58 is loaded into Y.
 SAVE    8.00  8.00 8 is loaded into X and Y, 58 is loaded into Z.
 2   2.  2 is keyed and loaded into X; previous contents (8) are destroyed.
 ÷   4.00  Contents of Y (8) are divided by contents of X (2) then contents are destroyed; result (4) is loaded into X; contents of Z (58) are dropped to Y.
 
58