| KEY IN | DISPLAY | EXPLANATION |
| PRGM -> -> ENTER SIMPSON | Prgm 1: SIMPSON | Program named "SIMPSON" |
| 2nd VARS 5 2 | FnOff | Deselects all functions |
Disp 2nd  "LOWERLIMIT" | Disp "LOWERLIMIT" | Lower limit of integration |
| Input A | Input A | After ?, type in the lower limit of integration |
| Disp 2nd "UPPERLIMIT" | Disp "UPPERLIMIT" | Upper limit of integration |
| Input B | Input B | After ?, type in the upper limit of integration |
Disp 2nd "N SUBINTERVALS" | Disp "N SUBINTERVALS" | Number of subintervals for [A, B] is N |
| Disp 2nd "ENTER EVEN N" | Disp "ENTER EVEN N" | The even integer N is to be entered |
| Input N | Input N | After ?, type in N |
| 0 STO S | -> S | 0 is stored in location S (for Simpson's Rule) |
| 0 STO V | -> V | 0 is stored in location V (for the Trapezoidal Rule) |
(B - A)
(N) STO W | (B - A)/N -> W | Subinterval width (B-A)/N stored in location W |
| 1 STO J | 1 -> J | 1 is stored in location J |
| Lbl 1 | Lbl 1 | Start of loop |
| A + 2(J - 1)W STO L | A + 2(J - 1)W -> L | Left endpoint of [A+2(j-1)W, A+2jW] stored in L |
| A + 2JW STO R | A + 2JW -> R | Right endpoint of [A+2(j-1)W, A+2jW] stored in R |
| (L + R) 2 STO M | (L + R)/2 -> M | Midpoint of [A+2(j-1)W, A+2jW] stored in M |
L STO X,T, | L -> X | L is stored in location X |
| 2nd VARS 1 1 STO L | Y1 -> L | Y1(L) is stored in location L |
| M STO X,T, | M -> X | M is stored in location X |
| 2nd VARS 1 1 STO M | Y1 -> M | Y1(M) is stored in location M |
| R STO X,T, | R -> X | R is stored in location X |
| 2nd VARS 1 1 STO R | Y1 -> R | Y1(R) is stored in location R |
| W(L+4M+R)
3 + S STO
S | W(L+4M+R)/3 + S -> S | New sum is stored in location S (for Simp. Rule) |
| W(L+2M+R)
2 + V STO V | W(L+2M+R)/2 +V -> V | New sum is stored in location V (for Trap. Rule) |
| IS > J , N/2) | IS > (J,N/2) | Increment J one step. If J>N/2, skip next command |
| Goto 1 | Goto 1 | Program returns to Lbl 1 and loops again |
| Disp 2nd "Simpson Rule" | Disp. "Simpson Rule" | Prepares for the Simpson's Rule approximation |
| Disp S | Disp S | Displays the Simpson's Rule approximation S |
| Disp 2nd "Trap. Rule" | Disp. "Trap. Rule" | Prepares for the Trapezoidal Rule approximation |
| Disp V | Disp V | Displays the Trapezoidal Rule approximation V |
do the
following:2nd QUIT (to quit the program)
Y= key in your function f(x) ENTER
2nd QUIT
PRGM (choose the program) ENTER
| The display reads | LOWERLIMIT, ? | Key in A ENTER | (gives the lower limit of integration) |
| The display reads | UPPERLIMIT, ? | Key in B ENTER | (gives the upper limit of integration) |
| The display reads | ... ENTER N, ? | Key in N ENTER | (gives number of interval into which [A, B] is divided) |
To execute the program again, just key in ENTER
Identification of italicized words in the program:
Input | (PRGM -> 1) |
Display | (PRGM -> 3) |
Label | (PRGM -> 9) |
Goto | (PRGM ) |
Is > | (PRGM aA) |
represents zero (distinguished from the letter 0)
If you type then you get a "space" (between two words)