diff --git a/kcalc-15.04.0/kcalc.cpp b/kcalc-15.04.0/kcalc.cpp
--- a/kcalc-15.04.0/kcalc.cpp
+++ b/kcalc-15.04.0/kcalc.cpp
@@ -813,6 +813,79 @@
 	if (e->key() == Qt::Key_Control) {
 		emit switchShowAccels(true);
 	}
+	
+        switch (e->key()) {
+        case Qt::Key_0:
+            // 0 is available in all number systems, so the Button will never be deactivated
+            pb0->animateClick();
+            break;
+        case Qt::Key_1:
+            // 1 is available in all number systems, so the Button will never be deactivated
+            pb1->animateClick();
+            break;
+        case Qt::Key_2:
+            if(pb2->isEnabled())
+                pb2->animateClick();
+            break;
+        case Qt::Key_3:
+            if(pb3->isEnabled())
+                pb3->animateClick();
+            break;
+        case Qt::Key_4:
+            if(pb4->isEnabled())
+                pb4->animateClick();
+            break;
+        case Qt::Key_5:
+            if(pb5->isEnabled())
+                pb5->animateClick();
+            break;
+        case Qt::Key_6:
+            if(pb6->isEnabled())
+                pb6->animateClick();
+            break;
+        case Qt::Key_7:
+            if(pb7->isEnabled())
+                pb7->animateClick();
+            break;
+        case Qt::Key_8:
+            if(pb8->isEnabled())
+                pb8->animateClick();
+            break;
+        case Qt::Key_9:
+            if(pb9->isEnabled())
+                pb9->animateClick();
+            break;
+        case Qt::Key_Enter:
+            if(pbEqual->isEnabled())
+                pbEqual->animateClick();
+            break;
+        case Qt::Key_Equal:
+            if(pbEqual->isEnabled())
+                pbEqual->animateClick();
+            break;
+        case Qt::Key_Plus:
+            if(pbPlus->isEnabled())
+                pbPlus->animateClick();
+            break;
+        case Qt::Key_Minus:
+            if(pbMinus->isEnabled())
+                pbMinus->animateClick();
+            break;
+        case Qt::Key_Comma:
+            if(pbPeriod->isEnabled())
+                pbPeriod->animateClick();
+            break;
+        case Qt::Key_Asterisk:
+            if(pbMultiplication->isEnabled())
+                pbMultiplication->animateClick();
+            break;
+        case Qt::Key_Slash:
+            if(pbDivision->isEnabled())
+                pbDivision->animateClick();
+            break;
+        default:
+            break;
+    }
 }
 
 //------------------------------------------------------------------------------