' Program developed by Jason Page of Page Telegram May of 2024
' V1.00 is not fault tolerant: text file needs consistently 5 columns and
' the last line EOF must not be an empty carriage return.
' This software is not yet ready for release for production, yet until
' Fault tolerant measures are made.

' This software is released privately and folks are welcome to improve
' Upon it. If you have such interest you may contact me:
' jsp@pagetelegram.com

' ToDoGram copyright Jason Page 2024

' This software is developed for easily updatable text based todo display
' and can be implemented in different merchant environments.
' Press "F" to toggle full screen and +/- for incrementing rotation in
' seconds. This software is designed to be compiled in qb64 compiler.
' See qb64.net for details or google for it.

DIM SHARED a$(255), b$(255), c$(255), d$(255), e$(255)

declare sub  menu(tis) as dynamic
declare sub disp(tis) as dynamic
_TITLE "ToDoGram V1.00 by Page Telegram, March 2024"
TIMER ON

f = 0
tis = 5

CALL menu(tis)

five:
p = p + 1
CLS


COLOR 15, 2
CLS
LOCATE 1, 1
PRINT "                        MENU AS OF: "; DATE$; "  "; TIME$; "              sec:"; tis
COLOR 12, 1
tmp$ = "    \      \ \  \ \                                          \ \     \ \   \ "
PRINT USING tmp$; a$(0); b$(0); c$(0); d$(0); e$(0)
COLOR 15, 0
TIMER STOP
TIMER ON
RETURN

SUB menu (tis)
    DO

        1:
        IF f = 1 THEN
            _FULLSCREEN
        ELSE
            _FULLSCREEN OFF
        END IF
        p = 1
        c = 0: i = 0
        CLS
        IF _FILEEXISTS("todo.txt") THEN
            OPEN "todo.txt" FOR INPUT AS #1
            DO
                IF NOT (EOF(1)) THEN
                    INPUT #1, a$(c), b$(c), c$(c), d$(c), e$(c)
                    c = c + 1
                END IF
            LOOP UNTIL EOF(1)
            CLOSE #1
            CALL disp(tis)
            COLOR 12, 1
            tmp$ = "    \       \ \   \ \                                          \ \     \ \   \ "
            PRINT USING tmp$; a$(0); b$(0); c$(0); d$(0); e$(0)


            FOR i = 1 TO c
                IF i MOD 2 = 1 THEN
                    COLOR 0, 15

                ELSE
                    COLOR 15, 0

                END IF

                tmp$ = "##  \       \ \   \ \                                          \ \     \ \   \ "
                PRINT USING tmp$; i; a$(i); b$(i); c$(i); d$(i); e$(i)

                IF i MOD 17 = 0 THEN
                    SELECT CASE tis
                        CASE 1: ON TIMER(1) GOSUB five
                        CASE 2: ON TIMER(2) GOSUB five
                        CASE 3: ON TIMER(3) GOSUB five
                        CASE 4: ON TIMER(4) GOSUB five
                        CASE 5: ON TIMER(5) GOSUB five
                        CASE 6: ON TIMER(6) GOSUB five
                        CASE 7: ON TIMER(7) GOSUB five
                        CASE 8: ON TIMER(8) GOSUB five
                        CASE 9: ON TIMER(9) GOSUB five
                        CASE 10: ON TIMER(10) GOSUB five
                        CASE 11: ON TIMER(11) GOSUB five
                        CASE 12: ON TIMER(12) GOSUB five
                        CASE 13: ON TIMER(13) GOSUB five
                        CASE 14: ON TIMER(14) GOSUB five
                        CASE 15: ON TIMER(15) GOSUB five
                        CASE 16: ON TIMER(16) GOSUB five
                        CASE 17: ON TIMER(17) GOSUB five
                        CASE 18: ON TIMER(18) GOSUB five
                        CASE 19: ON TIMER(19) GOSUB five
                        CASE 20: ON TIMER(20) GOSUB five
                    END SELECT

                    SLEEP
                END IF

                SELECT CASE LCASE$(INKEY$)
                    CASE CHR$(27): SYSTEM
                    CASE "f": IF f = 0 THEN f = 1 ELSE f = 0: GOTO 1
                    CASE "-", "_":
                        IF tis > 1 THEN
                            tis = tis - 1
                            GOTO 1
                        ELSE
                            BEEP
                        END IF
                    CASE "+", "=":
                        IF tis < 20 THEN
                            tis = tis + 1
                            GOTO 1
                        ELSE
                            BEEP
                        END IF
                END SELECT

            NEXT i

        ELSE
            PRINT "Creating file 'todo.txt' as did not already exist. Please open this file in a text editor such as notepad with 5 columns seperated by a comma."
            PRINT "Hit any key..."
            SLEEP
            OPEN "todo.txt" FOR OUTPUT AS #2
            PRINT #2, "Date,Task,N/D,Done,Cost"
            PRINT "File created. Please open '~/todo.txt' and add essential display items. Program restarts in 10 seconds."
            PRINT "[ESC]ape to exit or toggle full screen mode using [F] key..."
            SLEEP 10
            CLOSE #2
        END IF
        SLEEP tis
    LOOP
END SUB

SUB disp (tis)

    COLOR 15, 2
    CLS
    LOCATE 1, 1
    PRINT "                        MENU AS OF: "; DATE$; "  "; TIME$; "              sec:"; tis
    COLOR 12, 1

END SUB

Here is a revised version with html view support for local machine and web server.

' Program developed by Jason Page of Page Telegram May of 2024
' V1.00 is not fault tolerant: text file needs consistently 5 columns and
' the last line EOF must not be an empty carriage return.
' This software is not yet ready for release for production, yet until
' Fault tolerant measures are made.

' This software is released privately and folks are welcome to improve
' Upon it. If you have such interest you may contact me:
' jsp@pagetelegram.com

' ToDoGram copyright Jason Page 2024

' This software is developed for easily updatable text based todo display
' and can be implemented in different merchant environments.
' Press "F" to toggle full screen and +/- for incrementing rotation in
' seconds. This software is designed to be compiled in qb64 compiler.
' See qb64.net for details or google for it.

Dim Shared a$(255), b$(255), c$(255), d$(255), e$(255)

declare sub  menu(tis) as dynamic
declare sub disp(tis) as dynamic
declare sub web(tis) as dynamic

'DIM localLine$ AS STRING
'DIM columns AS STRING

_Title "ToDoGram V1.01h by Page Telegram, March 2024"
Timer On

f = 0
tis = 5

Call menu(tis)

five:
p = p + 1
Cls


Color 15, 2
Cls
Locate 1, 1
Print "                        TODO AS OF: "; Date$; "  "; Time$; "              sec:"; tis
Color 12, 1
tmp$ = "    \      \ \  \ \                                          \ \     \ \   \ "
Print Using tmp$; a$(0); b$(0); c$(0); d$(0); e$(0)
Color 15, 0
Timer Stop
Timer On
Return

Sub web (tis)
    Dim columns(5) As String
    Open "todo.txt" For Input As #1 ' Open the CSV file for reading
    Open "todo.html" For Output As #2 ' Open the HTML file for writing

    ' Write the beginning of the HTML document
    Print #2, "<html><head><title>Todo List</title><meta http-equiv='refresh' content='8'></head><body>"
    Print #2, "<table border='1' style='border-collapse: collapse;'>"

    ' Read the first line for column headings
    If Not EOF(1) Then
        Line Input #1, headings$
        ' Initialize variables
        Dim heading(5) As String
        colNum = 1
        temp$ = ""
        For i = 1 To Len(headings$)
            char$ = Mid$(headings$, i, 1)
            If char$ = "," Then
                heading(colNum) = temp$
                colNum = colNum + 1
                temp$ = ""
            Else
                temp$ = temp$ + char$
            End If
        Next i
        heading(colNum) = temp$ ' Add the last heading after the loop

        ' Write the header row with custom headings
        Print #2, "<tr style='background-color: yellow; color: black;'>"
        For i = 1 To colNum
            Print #2, "<th>"; heading(i); "</th>"
        Next i
        Print #2, "</tr>"
    End If

    ' Initialize variables for alternating row colors
    rowColor = TRUE

    ' Read each line from the CSV and write it to the table
    Do While Not EOF(1)
        Line Input #1, line$

        ' Manual parsing of line into columns
        colNum = 1
        temp$ = ""

        For i = 1 To Len(line$)
            char$ = Mid$(line$, i, 1)
            If char$ = "," Then
                columns(colNum) = temp$
                colNum = colNum + 1
                temp$ = ""
            Else
                temp$ = temp$ + char$
            End If
        Next i
        columns(colNum) = temp$ ' Add the last column after the loop

        ' Alternate row color between light red and light blue
        If rowColor Then
            Print #2, "<tr style='background-color: #FFCCCC;'>" ' Light red
            rowColor = FALSE
        Else
            Print #2, "<tr style='background-color: #CCCCFF;'>" ' Light blue
            rowColor = TRUE
        End If

        ' Write each column to the table
        For i = 1 To colNum
            Print #2, "<td>"; columns(i); "</td>"
        Next i
        Print #2, "</tr>"
    Loop

    ' Write the end of the HTML document
    Print #2, "</table></body></html>"

    ' Close the files
    Close #1
    Close #2
End Sub



Sub menu (tis)
    ' ***



    '***





    ' ***


    Do

        1:
        If f = 1 Then
            _FullScreen
        Else
            _FullScreen Off
        End If
        p = 1
        c = 0: i = 0
        Cls





        If _FileExists("todo.txt") Then

            ' QBASIC code to remove carriage return at last line of text file if that line contains no text

            ' Get the filename from user input
            afile$ = "todo.txt"

            ' Open the file
            Open afile$ For Input As #1

            ' Read the file until the last line
            While Not EOF(1)
                Line Input #1, last_line$
            Wend

            ' Close the file
            Close #1

            ' Check if the last line is empty
            If Len(last_line$) = 0 Then
                ' Re-open the file for writing
                Open afile$ For Input As #1
                Open afile$ For Output As #2

                ' Write all lines except the last one
                While Not EOF(1)
                    Line Input #1, last_line$
                    If Not EOF(1) Then
                        Print #2, last_line$
                    End If
                Wend

                ' Close both files
                Close #1
                Close #2

                ' PRINT "Removed empty last line from "; afile$
            Else
                ' PRINT "Last line in "; afile$; " is not empty."
            End If


    
            Open "todo.txt" For Input As #1
            Do
                If Not (EOF(1)) Then
                    Input #1, a$(c), b$(c), c$(c), d$(c), e$(c)
                    c = c + 1
                End If
            Loop Until EOF(1)
            Close #1
            Call disp(tis)
            Color 12, 1
            tmp$ = "    \       \ \   \ \                                          \ \     \ \   \ "
            Print Using tmp$; a$(0); b$(0); c$(0); d$(0); e$(0)


            For i = 1 To c
                If i Mod 2 = 1 Then
                    Color 0, 15

                Else
                    Color 15, 0

                End If

                tmp$ = "##  \       \ \   \ \                                          \ \     \ \   \ "
                Print Using tmp$; i; a$(i); b$(i); c$(i); d$(i); e$(i)

                If i Mod 20 = 0 Then
                    Select Case tis
                        Case 1: On Timer(1) GoSub five
                        Case 2: On Timer(2) GoSub five
                        Case 3: On Timer(3) GoSub five
                        Case 4: On Timer(4) GoSub five
                        Case 5: On Timer(5) GoSub five
                        Case 6: On Timer(6) GoSub five
                        Case 7: On Timer(7) GoSub five
                        Case 8: On Timer(8) GoSub five
                        Case 9: On Timer(9) GoSub five
                        Case 10: On Timer(10) GoSub five
                        Case 11: On Timer(11) GoSub five
                        Case 12: On Timer(12) GoSub five
                        Case 13: On Timer(13) GoSub five
                        Case 14: On Timer(14) GoSub five
                        Case 15: On Timer(15) GoSub five
                        Case 16: On Timer(16) GoSub five
                        Case 17: On Timer(17) GoSub five
                        Case 18: On Timer(18) GoSub five
                        Case 19: On Timer(19) GoSub five
                        Case 20: On Timer(20) GoSub five
                    End Select

                    Sleep
                End If

                Select Case LCase$(InKey$)
                    Case Chr$(27): System
                    Case "f": If f = 0 Then f = 1 Else f = 0: GoTo 1
                    Case "-", "_":
                        If tis > 1 Then
                            tis = tis - 1
                            GoTo 1
                        Else
                            Beep
                        End If
                    Case "+", "=":
                        If tis < 20 Then
                            tis = tis + 1
                            GoTo 1
                        Else
                            Beep
                        End If
                End Select

            Next i
            Call web(tis)
        Else
            Print "Creating file 'todo.txt' as did not already exist. Please open this file in a text editor such as notepad with 5 columns seperated by a comma."
            Print "Hit any key..."
            Sleep
            Open "todo.txt" For Output As #2
            Print #2, "Date,Task,N/D,Done,Cost"
            Print "File created. Please open '~/todo.txt' and add essential display items. Program restarts in 10 seconds."
            Print "[ESC]ape to exit or toggle full screen mode using [F] key..."
            Sleep 10
            Close #2
        End If
        Sleep tis

    Loop
End Sub

Sub disp (tis)

    Color 15, 2
    Cls
    Locate 1, 1
    Print "                        TODO AS OF: "; Date$; "  "; Time$; "              sec:"; tis
    Color 12, 1

End Sub

Here is the newest version with better error handling:

' Program developed by Jason Page of Page Telegram May of 2024
' This version is more fault-tolerant and streamlined for better performance and reliability.
' FreeBasic -lang qb compatible version

' Constants for UI colors
Const BACKGROUND_COLOR = 15
Const HIGHLIGHT_COLOR = 12
Const NORMAL_TEXT_COLOR = 7
Const ERROR_TEXT_COLOR = 12
Const SUCCESS_TEXT_COLOR = 10

' Global variables
Dim Shared dataArray(255, 5) As String
Dim Shared rotationTime As Integer = 5
Dim Shared fullScreenMode As Boolean = False

Declare Sub InitializeScreen()
Declare Sub LoadData()
Declare Sub DisplayData()
Declare Sub UpdateHTML()
Declare Sub HandleInput()
Declare Sub CheckLastLine()
Declare Sub ToggleFullScreen()

' Main execution starts here
_Title "ToDoGram V1.01h by Page Telegram, March 2024"
Timer On
Call InitializeScreen
Call LoadData
Call DisplayData

Do
    Call HandleInput
    Sleep rotationTime
Loop Until InKey$ = Chr$(27) ' Loop until ESC is pressed

Sub InitializeScreen
    Cls
    Color BACKGROUND_COLOR, NORMAL_TEXT_COLOR
    Locate 1, 1
    Print "TODO AS OF: "; Date$; "  "; Time$; "              sec:"; rotationTime
End Sub

Sub LoadData
    Dim currentLine As Integer
    Dim fileLine As String
    Dim tempArray() As String

    Open "todo.txt" For Input As #1
    currentLine = 0

    Do Until EOF(1)
        Line Input #1, fileLine
        tempArray = Split(fileLine, ",")
        If UBound(tempArray) >= 4 Then
            dataArray(currentLine, 0) = tempArray(0)
            dataArray(currentLine, 1) = tempArray(1)
            dataArray(currentLine, 2) = tempArray(2)
            dataArray(currentLine, 3) = tempArray(3)
            dataArray(currentLine, 4) = tempArray(4)
            currentLine = currentLine + 1
        End If
    Loop
    Close #1

    If currentLine = 0 Then
        Print "No data loaded or incorrect file format."
    Else
        Print "Data loaded successfully."
    End If
End Sub

Sub DisplayData
    For i As Integer = 0 To 255
        If dataArray(i, 0) <> "" Then
            Locate 2 + i, 1
            Print Using "##  \       \ \   \ \                                          \ \     \ \   \ "; i + 1; dataArray(i, 0); dataArray(i, 1); dataArray(i, 2); dataArray(i, 3); dataArray(i, 4)
        End If
    Next i
End Sub

Sub HandleInput
    Dim key As String
    key = InKey$
    Select Case key
        Case "f", "F"
            Call ToggleFullScreen
        Case "-", "_"
            If rotationTime > 1 Then rotationTime = rotationTime - 1
        Case "+", "="
            If rotationTime < 20 Then rotationTime = rotationTime + 1
        Case Chr$(27)  ' ESC key
            End
    End Select
End Sub


Sub ToggleFullScreen
    fullScreenMode = Not fullScreenMode
    If fullScreenMode Then
        _FullScreen
    Else
        _FullScreen Off
    End If
End Sub



Sub UpdateHTML
    Open "todo.html" For Output As #2
    Print #2, "<html><head><title>Todo List</title><meta http-equiv='refresh' content='" & Str$(rotationTime) & ";'></head><body>"
    Print #2, "<table border='1' style='border-collapse: collapse;'>"
    Print #2, "<tr style='background-color: yellow; color: black;'><th>Date</th><th>Task</th><th>N/D</th><th>Done</th><th>Cost</th></tr>"

    For i As Integer = 0 To 255
        If dataArray(i, 0) <> "" Then
            Print #2, "<tr style='background-color: " & IIf(i Mod 2 = 0, "#FFCCCC", "#CCCCFF") & ";'>"
            For j As Integer = 0 To 4
                Print #2, "<td>"; dataArray(i, j); "</td>"
            Next j
            Print #2, "</tr>"
        End If
    Next i

    Print #2, "</table></body></html>"
    Close #2
End Sub



   

Sub CheckLastLine
    Dim fileContent() As String
    Dim totalLines As Integer

    Open "todo.txt" For Input As #1
    While Not EOF(1)
        ReDim Preserve fileContent(totalLines)
        Line Input #1, fileContent(totalLines)
        totalLines = totalLines + 1
    Wend
    Close #1

    ' Check if the last line is empty and remove it if necessary
    If totalLines > 0 AndAlso Len(Trim(fileContent(totalLines - 1))) = 0 Then
        totalLines = totalLines - 1  ' Reduce the count to ignore the last empty line
        Open "todo.txt" For Output As #1
        For i As Integer = 0 To totalLines - 1
            Print #1, fileContent(i)
        Next i
        Close #1
        Print "Removed empty last line from todo.txt"
    Else
        Print "No empty last line in todo.txt"
    End If
End Sub