diff --git a/qt_gui.png b/qt_gui.png
index f24dfc5..2cbbb69 100644
Binary files a/qt_gui.png and b/qt_gui.png differ
diff --git a/qt_gui/main.qml b/qt_gui/main.qml
index fdad647..b64fbbe 100644
--- a/qt_gui/main.qml
+++ b/qt_gui/main.qml
@@ -19,7 +19,7 @@ ApplicationWindow
 		Rectangle{
 			width: 100
 			height: 25
-			color: "red"
+			color: "#ff9494"
 			Text {text: "Quit"}
 			MouseArea {
 				onClicked: Qt.quit()
@@ -56,10 +56,21 @@ ApplicationWindow
 						id: key_key;
 						width: 100;
 						height: 100;
-						color: "gray"
+						color: getBackgroundColor(parent.objectName, index)
 						border { width: 1; color: "black" }
 						Text {
-							text: {getText(parent.parent.objectName, index)}
+							horizontalAlignment: Text.AlignHCenter
+							font.pointSize: 16
+							color: "gray"
+							text: {getShiftedText(parent.parent.objectName, index) + "<br><br>"}
+								textFormat: Text.RichText
+								anchors.centerIn: parent
+						}
+						Text {
+							horizontalAlignment: Text.AlignHCenter
+							font.pointSize: 24
+							text: {"<br>" + getText(parent.parent.objectName, index) + "<br>"}
+							textFormat: Text.RichText
 							anchors.centerIn: parent
 						}
 						MouseArea {
@@ -74,13 +85,37 @@ ApplicationWindow
 
 	function getText(row, col) {
 		var keys = [
-			["Shift", "x<->y", "+/-", "C"],
-			["7", "8", "9", "/"],
-			["4", "5", "6", "*"],
-			["1", "2", "3", "-"],
-			["0", ".", "Enter", "+"]
+			["Shift", "x ⇄ y", "±",     "←"],
+			["7",     "8",     "9",     "÷"],
+			["4",     "5",     "6",     "×"],
+			["1",     "2",     "3",     "-"],
+			["0",     ".",     "Enter", "+"]
 		]
 
-		return keys[row][col]
+		return "<b>" + keys[row][col] + "</b>"
+	}
+	
+	function getShiftedText(row, col) {
+		var shifted_keys = [
+		["Shift", "1/x", " √<span style=\"text-decoration: overline\">x</span> ",   "CL<i>x</i>"],
+		["y<sup>x</sup> ",   "ln(x)", "log(x)", ""],
+		["",      "e<sup>x</sup>",   "10<sup>x</sup>",   ""],
+		["",      "",      "",       ""],
+		["off",   "",      "",       ""]
+		]
+		
+		return "<small>" + shifted_keys[row][col] + "</small>"
+	}
+	
+	function getBackgroundColor(row, col) {
+		var background_color = [
+			["white",   "white",   "white", "#ff9494"],
+			["#eeeeee", "#eeeeee", "#eeeeee", "white"],
+			["#eeeeee", "#eeeeee", "#eeeeee", "white"],
+			["#eeeeee", "#eeeeee", "#eeeeee", "white"],
+			["#eeeeee", "#eeeeee", "white",   "white"]
+		]
+		
+		return background_color[row][col]
 	}
 }
diff --git a/src/lcd.h b/src/lcd.h
index 97583a3..735e4ad 100644
--- a/src/lcd.h
+++ b/src/lcd.h
@@ -16,6 +16,11 @@ void LCD_Clear(void);
 void LCD_GoTo(uint8_t row, uint8_t col);
 
 void LCD_OutString(__xdata const char* string, uint8_t max_chars);
+#ifdef DESKTOP
+void LCD_OutString_Initial(__xdata const char* string, uint8_t max_chars);
+#else
+#define LCD_OutString_Initial(a, b) LCD_OutString(a, b)
+#endif
 short TERMIO_PutChar(unsigned char letter);
 void LCD_OutNibble(uint8_t x);
 void LCD_ClearToEnd(uint8_t curr_row);
diff --git a/src/lcd_emulator.c b/src/lcd_emulator.c
index ed73a92..d3aa11c 100644
--- a/src/lcd_emulator.c
+++ b/src/lcd_emulator.c
@@ -15,6 +15,8 @@
 static uint8_t lcd_row, lcd_col;
 static char lcd_buf[MAX_ROWS][MAX_CHARS_PER_LINE];
 
+static char enable_checks = 1;
+
 const char* get_lcd_buf(void){
 	return &lcd_buf[0][0];
 }
@@ -71,6 +73,12 @@ void LCD_OutString(const char *string, uint8_t max_chars) {
 	}
 }
 
+void LCD_OutString_Initial(const char *string, uint8_t max_chars) {
+	enable_checks = 0;
+	LCD_OutString(string, max_chars);
+	enable_checks = 1;
+}
+
 static int is_valid_character(char letter){
 	if (isdigit(letter)){
 		return 1;
@@ -78,6 +86,8 @@ static int is_valid_character(char letter){
 		return 1;
 	} else if(letter == '.' || letter == ' ' || letter == '-'){
 		return 1;
+	} else if(letter == '^'){
+		return 1;
 	}
 
 	return 0;
@@ -94,7 +104,7 @@ short TERMIO_PutChar(unsigned char letter) {
 		}
 	}
 	//warn if unknown character
-	if (!is_valid_character(letter)) {
+	if (!is_valid_character(letter) && enable_checks) {
 		printf("\nerror @%d,%d, invalid character %d\n",
 				lcd_row, lcd_col, letter);
 	}
diff --git a/src/main.c b/src/main.c
index ef55892..72d74df 100644
--- a/src/main.c
+++ b/src/main.c
@@ -208,7 +208,7 @@ int main()
 	ExpBuf[0] = 0;
 	ExpBuf[1] = 0;
 
-	LCD_OutString(VER_STR, 32);
+	LCD_OutString_Initial(VER_STR, 32);
 #ifdef DESKTOP
 	LcdAvailable.release();
 #endif